sequence_id
stringlengths 7
7
| sequence_name
stringlengths 4
573
| sequence
listlengths 1
348
| keywords
listlengths 1
8
| score
int64 1
2.35k
| offset_a
int64 -14,827
666,262,453B
| offset_b
int64 0
635M
⌀ | cross_references
listlengths 1
128
⌀ | former_ids
listlengths 1
3
⌀ | author
stringlengths 7
231
⌀ | timestamp
timestamp[us]date 1999-12-11 03:00:00
2025-07-19 00:40:46
| filename
stringlengths 29
29
| hash
stringlengths 32
32
|
---|---|---|---|---|---|---|---|---|---|---|---|---|
A354801
|
n^2 minus the sum of all aliquot divisors of all positive integers <= n.
|
[
"1",
"3",
"7",
"11",
"19",
"24",
"36",
"44",
"57",
"68",
"88",
"95",
"119",
"136",
"156",
"172",
"204",
"218",
"254",
"271",
"301",
"330",
"374",
"385",
"428",
"463",
"503",
"530",
"586",
"603",
"663",
"695",
"745",
"792",
"848",
"864",
"936",
"989",
"1049",
"1078",
"1158",
"1187",
"1271",
"1318",
"1374",
"1439",
"1531",
"1550",
"1639",
"1695",
"1775",
"1832",
"1936",
"1977",
"2069",
"2116"
] |
[
"nonn",
"easy"
] | 54 | 1 | 2 |
[
"A000217",
"A000290",
"A001065",
"A004125",
"A024916",
"A153485",
"A236104",
"A237591",
"A237593",
"A353190",
"A354801"
] | null |
Omar E. Pol, Jun 06 2022
| 2023-10-23T02:00:34 |
oeisdata/seq/A354/A354801.seq
|
19c90114891421d425da12dab53ad809
|
A354802
|
Irregular triangle read by rows where T(n,k) is the number of independent sets of size k in the n-hypercube graph.
|
[
"1",
"1",
"1",
"2",
"1",
"4",
"2",
"1",
"8",
"16",
"8",
"2",
"1",
"16",
"88",
"208",
"228",
"128",
"56",
"16",
"2",
"1",
"32",
"416",
"2880",
"11760",
"29856",
"48960",
"54304",
"44240",
"29920",
"17952",
"9088",
"3672",
"1120",
"240",
"32",
"2",
"1",
"64",
"1824",
"30720",
"342400",
"2682432",
"15328064",
"65515840",
"213464240",
"538811200",
"1070860384",
"1708551424",
"2245780976",
"2517976640",
"2509047680"
] |
[
"nonn",
"tabf"
] | 39 | 0 | 4 |
[
"A027624",
"A354082",
"A354802"
] | null |
Christopher Flippen, Jun 06 2022
| 2025-06-27T22:01:15 |
oeisdata/seq/A354/A354802.seq
|
9ecfd6de43987bd26b99b696b56cbf3b
|
A354803
|
a(1) = 1; for n > 1, a(n) is the smallest positive number that is coprime to a(n-1) and the product a(n) * a(n-1) is distinct from all previous products a(i) * a(i-1), i=2..n-1.
|
[
"1",
"1",
"2",
"3",
"1",
"4",
"3",
"5",
"1",
"7",
"2",
"5",
"4",
"7",
"3",
"8",
"1",
"9",
"2",
"11",
"1",
"13",
"2",
"15",
"4",
"9",
"5",
"7",
"6",
"11",
"3",
"13",
"4",
"11",
"5",
"8",
"7",
"9",
"8",
"11",
"7",
"10",
"9",
"11",
"10",
"13",
"5",
"16",
"1",
"17",
"2",
"19",
"1",
"23",
"2",
"25",
"1",
"27",
"2",
"29",
"1",
"31",
"2",
"37",
"1",
"32",
"3",
"16",
"7",
"12",
"11",
"13",
"6",
"17",
"3",
"19",
"4",
"17",
"5",
"19",
"6",
"23",
"3",
"25",
"4",
"23"
] |
[
"nonn",
"look"
] | 12 | 1 | 3 |
[
"A088177",
"A317024",
"A354749",
"A354753",
"A354754",
"A354759",
"A354803",
"A354804"
] | null |
Scott R. Shannon, Jun 07 2022
| 2022-06-13T08:45:10 |
oeisdata/seq/A354/A354803.seq
|
4441e8fab2ea044577923795c73eac23
|
A354804
|
The products of consecutive terms in A354803.
|
[
"1",
"2",
"6",
"3",
"4",
"12",
"15",
"5",
"7",
"14",
"10",
"20",
"28",
"21",
"24",
"8",
"9",
"18",
"22",
"11",
"13",
"26",
"30",
"60",
"36",
"45",
"35",
"42",
"66",
"33",
"39",
"52",
"44",
"55",
"40",
"56",
"63",
"72",
"88",
"77",
"70",
"90",
"99",
"110",
"130",
"65",
"80",
"16",
"17",
"34",
"38",
"19",
"23",
"46",
"50",
"25",
"27",
"54",
"58",
"29",
"31",
"62",
"74",
"37",
"32",
"96",
"48",
"112",
"84",
"132",
"143",
"78",
"102"
] |
[
"nonn"
] | 7 | 1 | 2 |
[
"A088177",
"A354749",
"A354753",
"A354754",
"A354759",
"A354803",
"A354804"
] | null |
Scott R. Shannon, Jun 07 2022
| 2022-06-13T08:45:05 |
oeisdata/seq/A354/A354804.seq
|
30672c40b74342f33af82de12f3544c7
|
A354805
|
Triangle T(n,k) is an array of characteristic functions of primes involved in Goldbach's partitions of 2n.
|
[
"1",
"0",
"1",
"1",
"0",
"1",
"0",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1"
] |
[
"nonn",
"tabl"
] | 30 | 3 | null |
[
"A002375",
"A010051",
"A101264",
"A354805"
] | null |
Jean-François Alcover, Jun 07 2022
| 2025-02-16T08:34:03 |
oeisdata/seq/A354/A354805.seq
|
bda203774d6ac104c81cd98e72264b0c
|
A354806
|
Parity of Dirichlet inverse of {A003415, arithmetic derivative of n + A063524 (1, 0, 0, 0, ...)}.
|
[
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"1",
"1",
"1"
] |
[
"nonn"
] | 10 | 1 | null |
[
"A000035",
"A003415",
"A346241",
"A354806",
"A354807",
"A354818"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-08T15:48:52 |
oeisdata/seq/A354/A354806.seq
|
9a66a544ae71ce78457b526b6a26d5f1
|
A354807
|
a(n) = 1 if A346241(n) is negative, and 0 otherwise, where A346241 is the Dirichlet inverse of {A003415, arithmetic derivative of n + A063524 (1, 0, 0, 0, ...)}.
|
[
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1"
] |
[
"nonn"
] | 9 | 1 | null |
[
"A003415",
"A346241",
"A354806",
"A354807",
"A354808",
"A354809"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-08T15:48:56 |
oeisdata/seq/A354/A354807.seq
|
fbb2b33740003a61a52a95ef770a8f8e
|
A354808
|
Positions of negative terms in A346241.
|
[
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"23",
"25",
"26",
"27",
"28",
"29",
"31",
"33",
"34",
"35",
"37",
"38",
"39",
"41",
"43",
"44",
"45",
"46",
"47",
"49",
"50",
"51",
"52",
"53",
"55",
"57",
"58",
"59",
"61",
"62",
"63",
"65",
"66",
"67",
"68",
"69",
"70",
"71",
"73",
"74",
"75",
"76",
"77",
"78",
"79",
"81",
"82",
"83",
"85",
"86",
"87",
"89",
"91",
"92",
"93",
"94",
"95",
"97",
"98",
"99",
"101"
] |
[
"nonn"
] | 4 | 1 | 1 |
[
"A003415",
"A346241",
"A354807",
"A354808",
"A354809"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-08T15:49:00 |
oeisdata/seq/A354/A354808.seq
|
af8cdc908bb74996e4ad5f3bccc336e6
|
A354809
|
Positions of nonnegative terms in A346241.
|
[
"1",
"24",
"30",
"32",
"36",
"40",
"42",
"48",
"54",
"56",
"60",
"64",
"72",
"80",
"84",
"88",
"90",
"96",
"100",
"104",
"108",
"112",
"120",
"126",
"128",
"132",
"135",
"136",
"140",
"144",
"150",
"152",
"156",
"160",
"162",
"168",
"176",
"180",
"184",
"192",
"196",
"198",
"200",
"204",
"208",
"210",
"216",
"220",
"224",
"225",
"228",
"232",
"234",
"240",
"248",
"250",
"252",
"256",
"260",
"264",
"270",
"272",
"276",
"280",
"294",
"296",
"300"
] |
[
"nonn"
] | 4 | 1 | 2 |
[
"A003415",
"A346241",
"A354807",
"A354808",
"A354809"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-08T15:49:04 |
oeisdata/seq/A354/A354809.seq
|
de8acff3f34daee78d539a294b389466
|
A354810
|
Positions of zeros in A346242.
|
[
"4",
"8",
"16",
"24",
"28",
"32",
"40",
"44",
"48",
"52",
"64",
"68",
"76",
"80",
"88",
"92",
"96",
"104",
"116",
"121",
"124",
"128",
"136",
"144",
"148",
"152",
"160",
"164",
"169",
"172",
"176",
"184",
"188",
"192",
"208",
"212",
"232",
"236",
"240",
"244",
"248",
"256",
"268",
"272",
"284",
"288",
"289",
"292",
"296",
"304",
"312",
"316",
"320",
"328",
"332",
"338",
"344",
"356",
"361",
"364",
"368",
"376",
"384",
"388",
"404",
"408",
"412",
"416"
] |
[
"nonn"
] | 6 | 1 | 1 |
[
"A346242",
"A354810",
"A354811",
"A354812",
"A354813",
"A354814",
"A354820",
"A354822"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T13:01:26 |
oeisdata/seq/A354/A354810.seq
|
7487b86dcc87af7a4d5e92542bfd6bd3
|
A354811
|
Positions of +1's in A346242.
|
[
"1",
"14",
"22",
"26",
"34",
"38",
"46",
"58",
"62",
"65",
"74",
"82",
"86",
"94",
"95",
"106",
"118",
"122",
"134",
"142",
"143",
"146",
"155",
"158",
"166",
"178",
"185",
"187",
"194",
"202",
"206",
"209",
"214",
"215",
"217",
"218",
"221",
"226",
"247",
"254",
"262",
"274",
"278",
"298",
"299",
"302",
"305",
"314",
"323",
"326",
"334",
"335",
"346",
"358",
"362",
"365",
"377",
"382",
"386",
"391",
"394",
"395",
"398",
"403",
"422",
"427",
"437"
] |
[
"nonn"
] | 5 | 1 | 2 |
[
"A346242",
"A354811"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T13:01:31 |
oeisdata/seq/A354/A354811.seq
|
21ed370b58fbbdd80aa2dee01de2aaa0
|
A354812
|
Positions of +2's in A346242.
|
[
"132",
"156",
"204",
"228",
"276",
"348",
"372",
"444",
"492",
"516",
"564",
"636",
"708",
"732",
"804",
"852",
"876",
"948",
"996",
"1068",
"1164",
"1212",
"1236",
"1284",
"1308",
"1356",
"1524",
"1572",
"1644",
"1668",
"1788",
"1812",
"1884",
"1956",
"2004",
"2076",
"2148",
"2172",
"2292",
"2316",
"2364",
"2388",
"2532",
"2676",
"2724",
"2748",
"2796",
"2868",
"2892",
"3012",
"3084",
"3156",
"3228",
"3252",
"3324",
"3372"
] |
[
"nonn"
] | 7 | 1 | 1 |
[
"A346242",
"A354812",
"A354814",
"A354822"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-09T08:44:57 |
oeisdata/seq/A354/A354812.seq
|
300cfa2c85bc9814134e46e75090321d
|
A354813
|
Positions of +3's in A346242.
|
[
"21",
"33",
"39",
"51",
"57",
"69",
"87",
"93",
"111",
"123",
"129",
"130",
"141",
"159",
"177",
"183",
"190",
"201",
"213",
"219",
"231",
"237",
"249",
"267",
"291",
"303",
"309",
"310",
"321",
"327",
"339",
"370",
"381",
"393",
"411",
"417",
"430",
"447",
"453",
"471",
"489",
"501",
"519",
"537",
"543",
"573",
"579",
"591",
"597",
"610",
"633",
"669",
"670",
"681",
"687",
"699",
"717",
"723",
"730",
"753",
"771",
"789",
"790",
"807",
"813"
] |
[
"nonn"
] | 6 | 1 | 1 |
[
"A346242",
"A354813"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T13:01:36 |
oeisdata/seq/A354/A354813.seq
|
797f040f04c197abd773170f9bbcaac8
|
A354814
|
Positions of +4's in A346242.
|
[
"20",
"936",
"1224",
"1250",
"1368",
"1656",
"2088",
"2232",
"2664",
"2952",
"3096",
"3384",
"3816",
"4248",
"4392",
"4824",
"5112",
"5256",
"5688",
"5976",
"6408",
"6984",
"7272",
"7416",
"7704",
"7848",
"8136",
"9144",
"9432",
"9864",
"10008",
"10728",
"10872",
"11304",
"11736",
"11780",
"12024",
"12456",
"12888",
"13032",
"13752",
"13896",
"14060",
"14184",
"14328",
"15192",
"16056",
"16340",
"16344",
"16488"
] |
[
"nonn"
] | 13 | 1 | 1 |
[
"A346242",
"A354814",
"A372564"
] | null |
Antti Karttunen, Jun 07 2022
| 2024-05-25T10:42:14 |
oeisdata/seq/A354/A354814.seq
|
344b079be242fd4e296d3f3f4c73b918
|
A354815
|
Positions of zeros in A354347.
|
[
"9",
"27",
"45",
"49",
"81",
"99",
"117",
"121",
"135",
"162",
"169",
"234",
"242",
"243",
"261",
"270",
"279",
"289",
"297",
"306",
"361",
"363",
"369",
"387",
"405",
"495",
"507",
"529",
"549",
"567",
"639",
"657",
"722",
"729",
"747",
"783",
"801",
"837",
"841",
"891",
"909",
"961",
"1017",
"1083",
"1107",
"1179",
"1183",
"1251",
"1305",
"1369",
"1377",
"1485",
"1519",
"1521",
"1625",
"1629",
"1647",
"1681",
"1701",
"1791",
"1849"
] |
[
"nonn"
] | 9 | 1 | 1 |
[
"A038838",
"A354347",
"A354810",
"A354815"
] | null |
Antti Karttunen, Jun 07 2022
| 2023-01-02T08:58:45 |
oeisdata/seq/A354/A354815.seq
|
ee1ed6c810394c390a2695d1d4899552
|
A354816
|
Positions of -1's in A354347.
|
[
"2",
"3",
"4",
"5",
"7",
"8",
"11",
"13",
"17",
"19",
"23",
"29",
"30",
"31",
"35",
"37",
"41",
"43",
"44",
"47",
"53",
"59",
"60",
"61",
"65",
"66",
"67",
"71",
"73",
"77",
"79",
"83",
"89",
"95",
"97",
"101",
"103",
"107",
"109",
"110",
"113",
"114",
"119",
"127",
"131",
"137",
"139",
"143",
"149",
"151",
"155",
"157",
"161",
"163",
"165",
"167",
"170",
"173",
"174",
"179",
"181",
"191",
"193",
"197",
"199",
"203",
"211",
"215",
"221",
"223",
"227",
"229"
] |
[
"nonn"
] | 5 | 1 | 1 |
[
"A354347",
"A354816",
"A354817"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T16:02:04 |
oeisdata/seq/A354/A354816.seq
|
d2a9094ec16a85f76ed57e665ffd9f84
|
A354817
|
a(n) = 1 if A354347(n) = -1, otherwise 0.
|
[
"0",
"1",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"0"
] |
[
"nonn"
] | 7 | 1 | null |
[
"A354347",
"A354816",
"A354817"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T16:23:17 |
oeisdata/seq/A354/A354817.seq
|
67ec1cb8767c6aeb2158482d412da9d3
|
A354818
|
Positions of even terms in A346241.
|
[
"15",
"18",
"21",
"27",
"33",
"35",
"39",
"45",
"50",
"51",
"54",
"55",
"57",
"60",
"63",
"65",
"69",
"72",
"75",
"77",
"84",
"85",
"87",
"90",
"91",
"93",
"95",
"98",
"99",
"108",
"111",
"115",
"117",
"119",
"123",
"125",
"126",
"129",
"132",
"133",
"135",
"140",
"141",
"143",
"145",
"147",
"150",
"153",
"155",
"156",
"159",
"161",
"171",
"175",
"177",
"180",
"183",
"185",
"187",
"189",
"198",
"200",
"201",
"203",
"204",
"205",
"207",
"209",
"213"
] |
[
"nonn"
] | 4 | 1 | 1 |
[
"A346241",
"A354806",
"A354818"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-08T15:49:08 |
oeisdata/seq/A354/A354818.seq
|
8d1701b399847a5a125cfe40fd712cea
|
A354819
|
a(n) = 1 if n is a nonprime squarefree number, otherwise 0.
|
[
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"1"
] |
[
"nonn"
] | 11 | 1 | null |
[
"A000469",
"A008966",
"A010051",
"A046523",
"A322075",
"A354353",
"A354819",
"A354870"
] | null |
Antti Karttunen, Jun 10 2022
| 2022-06-12T15:16:35 |
oeisdata/seq/A354/A354819.seq
|
ee6e354740fa3f157d201afa99e65b9a
|
A354820
|
a(n) = 1 if A346242(n) = 0, otherwise 0.
|
[
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"1"
] |
[
"nonn"
] | 7 | 1 | null |
[
"A346242",
"A354810",
"A354820"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T16:02:14 |
oeisdata/seq/A354/A354820.seq
|
ec0d286e071066525fc6e022a0dfd1e2
|
A354821
|
a(1) = 1, and for n > 1, a(n) = -Sum_{d|n, d<n} A342001(n/d) * a(d).
|
[
"1",
"-1",
"-1",
"-1",
"-1",
"-3",
"-1",
"0",
"-1",
"-5",
"-1",
"3",
"-1",
"-7",
"-6",
"1",
"-1",
"4",
"-1",
"3",
"-8",
"-11",
"-1",
"8",
"-1",
"-13",
"0",
"3",
"-1",
"3",
"-1",
"1",
"-12",
"-17",
"-10",
"17",
"-1",
"-19",
"-14",
"12",
"-1",
"1",
"-1",
"3",
"4",
"-23",
"-1",
"3",
"-1",
"6",
"-18",
"3",
"-1",
"8",
"-14",
"16",
"-20",
"-29",
"-1",
"62",
"-1",
"-31",
"4",
"0",
"-16",
"-3",
"-1",
"3",
"-24",
"-9",
"-1",
"-6",
"-1",
"-37",
"6",
"3",
"-16",
"-5",
"-1",
"7",
"1"
] |
[
"sign"
] | 8 | 1 | 6 |
[
"A003415",
"A003557",
"A063524",
"A342001",
"A346241",
"A354821"
] | null |
Antti Karttunen, Jun 08 2022
| 2022-06-09T08:45:00 |
oeisdata/seq/A354/A354821.seq
|
7ae12cb4cc19a853852e9ff94eaa202e
|
A354822
|
Positions of -2's in A346242.
|
[
"12",
"1092",
"1596",
"2436",
"3108",
"3612",
"3876",
"4692",
"4884",
"4956",
"5244",
"5628",
"5916",
"6132",
"6324",
"6612",
"6636",
"7068",
"7476",
"7548",
"8004",
"8148",
"8364",
"8436",
"8556",
"8652",
"8772",
"9156",
"9348",
"9588",
"9804",
"10212",
"10668",
"10716",
"10788",
"10812",
"11316",
"11676",
"11868",
"12036",
"12084",
"12444",
"12516",
"12876",
"12972",
"13188",
"13452",
"13668",
"13692",
"13764"
] |
[
"nonn"
] | 6 | 1 | 1 |
[
"A346242",
"A354812",
"A354822"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-09T08:45:04 |
oeisdata/seq/A354/A354822.seq
|
9c35d40626fda7088877ea67fbd3fe71
|
A354823
|
Dirichlet inverse of A351083, where A351083(n) = gcd(n, A327860(n)), and A327860 is the arithmetic derivative of the primorial base exp-function.
|
[
"1",
"-1",
"-1",
"-1",
"-1",
"1",
"-7",
"-5",
"0",
"1",
"-1",
"1",
"-1",
"13",
"-3",
"-1",
"-1",
"-2",
"-1",
"-7",
"13",
"1",
"-1",
"9",
"-24",
"1",
"0",
"7",
"-1",
"7",
"-1",
"33",
"1",
"-15",
"9",
"-6",
"-1",
"1",
"-11",
"27",
"-1",
"-25",
"-1",
"-1",
"4",
"1",
"-1",
"7",
"48",
"24",
"1",
"-1",
"-1",
"2",
"-3",
"59",
"1",
"1",
"-1",
"19",
"-1",
"1",
"-12",
"23",
"1",
"-1",
"-1",
"33",
"1",
"-23",
"-1",
"-2",
"-1",
"1",
"52",
"1",
"7",
"23",
"-1",
"-67",
"0",
"1",
"-1",
"-25"
] |
[
"sign"
] | 9 | 1 | 7 |
[
"A038838",
"A122132",
"A327860",
"A346242",
"A351083",
"A353627",
"A354347",
"A354348",
"A354823",
"A354824"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-09T11:41:24 |
oeisdata/seq/A354/A354823.seq
|
d55f3e67a2bf78985de309f4c4f4f52d
|
A354824
|
Dirichlet inverse of A351084, where A351084(n) = gcd(n, A328572(n)), and A328572 converts the primorial base expansion of n into its prime product form, but with 1 subtracted from all nonzero digits.
|
[
"1",
"-1",
"-1",
"0",
"-1",
"1",
"-1",
"0",
"0",
"1",
"-1",
"0",
"-1",
"1",
"-3",
"0",
"-1",
"0",
"-1",
"-4",
"1",
"1",
"-1",
"0",
"-24",
"1",
"0",
"0",
"-1",
"7",
"-1",
"0",
"1",
"1",
"1",
"0",
"-1",
"1",
"1",
"8",
"-1",
"-1",
"-1",
"0",
"4",
"1",
"-1",
"0",
"0",
"24",
"1",
"0",
"-1",
"0",
"-3",
"0",
"1",
"1",
"-1",
"4",
"-1",
"1",
"-6",
"0",
"1",
"-1",
"-1",
"0",
"1",
"-7",
"-1",
"0",
"-1",
"1",
"52",
"0",
"-5",
"-1",
"-1",
"-8",
"0",
"1",
"-1",
"-6",
"-3",
"1",
"1",
"0",
"-1",
"-8",
"-5",
"0"
] |
[
"sign"
] | 8 | 1 | 15 |
[
"A346242",
"A351084",
"A354347",
"A354348",
"A354823",
"A354824"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-09T11:41:28 |
oeisdata/seq/A354/A354824.seq
|
d5515710baa78fc1ac88cbf1b5f09e1f
|
A354825
|
Dirichlet inverse of A293442, where A293442 is multiplicative with a(p^e) = A019565(e).
|
[
"1",
"-2",
"-2",
"1",
"-2",
"4",
"-2",
"-2",
"1",
"4",
"-2",
"-2",
"-2",
"4",
"4",
"8",
"-2",
"-2",
"-2",
"-2",
"4",
"4",
"-2",
"4",
"1",
"4",
"-2",
"-2",
"-2",
"-8",
"-2",
"-16",
"4",
"4",
"4",
"1",
"-2",
"4",
"4",
"4",
"-2",
"-8",
"-2",
"-2",
"-2",
"4",
"-2",
"-16",
"1",
"-2",
"4",
"-2",
"-2",
"4",
"4",
"4",
"4",
"4",
"-2",
"4",
"-2",
"4",
"-2",
"20",
"4",
"-8",
"-2",
"-2",
"4",
"-8",
"-2",
"-2",
"-2",
"4",
"-2",
"-2",
"4",
"-8",
"-2",
"-16",
"8",
"4",
"-2",
"4",
"4",
"4",
"4",
"4"
] |
[
"sign",
"mult"
] | 8 | 1 | 2 |
[
"A019565",
"A293442",
"A354825"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-09T11:41:32 |
oeisdata/seq/A354/A354825.seq
|
52e4d2e11713a67a8cb40e3621b36a6d
|
A354826
|
Dirichlet inverse of A238745.
|
[
"1",
"-2",
"-2",
"0",
"-2",
"5",
"-2",
"0",
"0",
"5",
"-2",
"-2",
"-2",
"5",
"5",
"0",
"-2",
"-2",
"-2",
"-2",
"5",
"5",
"-2",
"0",
"0",
"5",
"0",
"-2",
"-2",
"-17",
"-2",
"0",
"5",
"5",
"5",
"8",
"-2",
"5",
"5",
"0",
"-2",
"-17",
"-2",
"-2",
"-2",
"5",
"-2",
"0",
"0",
"-2",
"5",
"-2",
"-2",
"0",
"5",
"0",
"5",
"5",
"-2",
"16",
"-2",
"5",
"-2",
"0",
"5",
"-17",
"-2",
"-2",
"5",
"-17",
"-2",
"-8",
"-2",
"5",
"-2",
"-2",
"5",
"-17",
"-2",
"0",
"0",
"5",
"-2",
"16",
"5",
"5",
"5",
"0",
"-2",
"16"
] |
[
"sign"
] | 8 | 1 | 2 |
[
"A238745",
"A354349",
"A354359",
"A354826"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-09T11:41:35 |
oeisdata/seq/A354/A354826.seq
|
516f8b46eb42ccb1b7bfc1a533ba83a7
|
A354827
|
Numerators of Dirichlet inverse of fraction A003961(n) / sigma(n).
|
[
"1",
"-1",
"-5",
"-2",
"-7",
"5",
"-11",
"-8",
"-75",
"7",
"-13",
"5",
"-17",
"11",
"35",
"-1648",
"-19",
"75",
"-23",
"1",
"55",
"13",
"-29",
"2",
"-245",
"17",
"-225",
"11",
"-31",
"-35",
"-37",
"-1664",
"65",
"19",
"77",
"75",
"-41",
"23",
"85",
"4",
"-43",
"-55",
"-47",
"13",
"175",
"29",
"-53",
"412",
"-847",
"245",
"95",
"17",
"-59",
"225",
"91",
"11",
"23",
"31",
"-61",
"-5",
"-67",
"37",
"825",
"-7662464",
"17",
"-65",
"-71",
"19",
"145",
"-77"
] |
[
"sign",
"frac"
] | 11 | 1 | 3 |
[
"A000203",
"A003961",
"A349161",
"A349162",
"A349627",
"A354365",
"A354827",
"A354828"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T16:23:22 |
oeisdata/seq/A354/A354827.seq
|
d841970a4095a9cd414a596747e356d3
|
A354828
|
Denominators of Dirichlet inverse of fraction A003961(n) / sigma(n).
|
[
"1",
"1",
"4",
"7",
"6",
"4",
"8",
"35",
"208",
"6",
"12",
"14",
"14",
"8",
"24",
"7595",
"18",
"208",
"20",
"3",
"32",
"12",
"24",
"7",
"1116",
"14",
"832",
"28",
"30",
"24",
"32",
"7595",
"48",
"18",
"48",
"728",
"38",
"20",
"56",
"15",
"42",
"32",
"44",
"42",
"416",
"24",
"48",
"1519",
"3648",
"1116",
"72",
"49",
"54",
"832",
"72",
"35",
"16",
"30",
"60",
"12",
"62",
"32",
"1664",
"33759775",
"12",
"48",
"68",
"63",
"96",
"48",
"72",
"182",
"74",
"38",
"4464"
] |
[
"nonn",
"frac"
] | 8 | 1 | 3 |
[
"A000203",
"A003961",
"A349161",
"A349162",
"A349628",
"A354366",
"A354827",
"A354828"
] | null |
Antti Karttunen, Jun 07 2022
| 2022-06-07T16:23:27 |
oeisdata/seq/A354/A354828.seq
|
353cee6297c80b3b06bf28c0d33fd96b
|
A354829
|
Numbers k such that 2^k + 3^k + 6 is prime.
|
[
"1",
"2",
"3",
"4",
"5",
"8",
"9",
"15",
"18",
"23",
"24",
"33",
"34",
"35",
"44",
"63",
"88",
"89",
"120",
"220",
"228",
"229",
"570",
"1095",
"1863",
"2094",
"2718",
"3598",
"4658",
"6056",
"8819",
"9485",
"11220",
"23656",
"28762",
"35664",
"36544",
"39779",
"46868",
"50098",
"58853"
] |
[
"nonn",
"more",
"hard"
] | 52 | 1 | 2 |
[
"A353102",
"A354829"
] | null |
Hemjyoti Nath, Jun 07 2022
| 2024-06-01T08:45:13 |
oeisdata/seq/A354/A354829.seq
|
1b47f4f22c9944f9d8a48ec9aefb3e90
|
A354830
|
a(n) is the number of permutations p of [n] such that gcd(i, p(i)) > 1 for 2 <= i <= n.
|
[
"1",
"1",
"1",
"1",
"2",
"2",
"8",
"8",
"30",
"72",
"408",
"408",
"4104",
"4104",
"29640",
"208704",
"1437312",
"1437312",
"22653504",
"22653504",
"318695040",
"2686493376",
"27628410816",
"27628410816",
"575372874240",
"1775480841216",
"21115550048256",
"132879856582656",
"2321256928702464",
"2321256928702464",
"83095013944442880"
] |
[
"nonn"
] | 16 | 0 | 5 |
[
"A320843",
"A354830"
] | null |
Seiichi Manyama, Jun 07 2022
| 2022-06-07T13:00:11 |
oeisdata/seq/A354/A354830.seq
|
42566e6b94880d50728a520a883ac0eb
|
A354831
|
Primes of the form 3^k + 5^k + 7^k + 11^k + 13^k.
|
[
"5",
"373",
"46309",
"6732373",
"26450599458469",
"4317810550653973",
"15647143198792684919908583741989",
"6864681654384231304317569259724531213945845885866391974437116993829",
"5599548608682504162062596274137068329320798013420534505888549721133699842789"
] |
[
"nonn"
] | 17 | 1 | 1 |
[
"A166241",
"A352393",
"A354831"
] | null |
Hemjyoti Nath, Jun 07 2022
| 2022-07-22T10:38:37 |
oeisdata/seq/A354/A354831.seq
|
b22dd75edf01426a1b8feb287e308ab3
|
A354832
|
Integers m such that iterating the map f(x) = x^2 + 1 on m generates a number ending with m in binary format.
|
[
"0",
"1",
"2",
"5",
"10",
"26",
"37",
"90",
"165",
"421",
"933",
"1957",
"4005",
"8101",
"8282",
"24666",
"40869",
"106405",
"237477",
"286810",
"811098",
"1286053",
"3383205",
"5005402",
"11771813",
"28549029",
"38559834",
"105668698",
"239886426",
"296984485",
"833855397",
"1313628250",
"3461111898",
"7756079194",
"9423789989"
] |
[
"nonn",
"base"
] | 10 | 1 | 3 |
[
"A002522",
"A350130",
"A350590",
"A352973",
"A354832"
] | null |
Ya-Ping Lu, Jun 07 2022
| 2022-07-31T13:56:48 |
oeisdata/seq/A354/A354832.seq
|
91837b5ebf8f9bb9866e42689fd7b051
|
A354833
|
a(1)=1; for n > 1, a(n) = a(n-1) - n unless that result is already in the sequence or would be negative; otherwise, a(n) = a(n-1) * n.
|
[
"1",
"2",
"6",
"24",
"19",
"13",
"91",
"83",
"74",
"64",
"53",
"41",
"28",
"14",
"210",
"194",
"177",
"159",
"140",
"120",
"99",
"77",
"54",
"30",
"5",
"130",
"103",
"75",
"46",
"16",
"496",
"464",
"431",
"397",
"362",
"326",
"289",
"251",
"212",
"172",
"131",
"89",
"3827",
"3783",
"3738",
"3692",
"3645",
"3597",
"3548",
"3498",
"3447",
"3395",
"3342",
"3288",
"3233",
"3177"
] |
[
"nonn"
] | 36 | 1 | 2 |
[
"A005132",
"A200044",
"A354833",
"A355457"
] | null |
Kelvin Voskuijl, Jun 07 2022
| 2023-07-02T22:31:54 |
oeisdata/seq/A354/A354833.seq
|
393e59dc83d9213ce2f2c44554a2d94f
|
A354834
|
Numbers k such that 2*k can be written in at least one way as p+q with p, q, p+2*q and 2*q+p all prime.
|
[
"4",
"5",
"6",
"8",
"9",
"10",
"12",
"15",
"18",
"21",
"25",
"27",
"28",
"30",
"33",
"35",
"36",
"38",
"39",
"42",
"45",
"48",
"50",
"51",
"54",
"57",
"60",
"63",
"66",
"72",
"75",
"78",
"80",
"81",
"84",
"85",
"87",
"88",
"90",
"93",
"98",
"99",
"102",
"105",
"108",
"111",
"113",
"114",
"115",
"117",
"120",
"123",
"126",
"129",
"132",
"135",
"138",
"140",
"141",
"144",
"147",
"150",
"153",
"155",
"156",
"159",
"162",
"165",
"168"
] |
[
"nonn"
] | 9 | 1 | 1 |
[
"A237885",
"A354834"
] | null |
Robert Israel, Jun 07 2022
| 2022-06-14T15:30:08 |
oeisdata/seq/A354/A354834.seq
|
c4581a8ad2b65195d5749a8ca24d1dad
|
A354835
|
Numbers k such that the k-th and (k+1)st Stieltjes constants have opposite signs.
|
[
"0",
"2",
"5",
"9",
"12",
"16",
"21",
"25",
"30",
"35",
"40",
"45",
"50",
"56",
"62",
"67",
"73",
"79",
"85",
"91",
"97",
"104",
"110",
"117",
"123",
"130",
"136",
"143",
"150",
"157",
"164",
"171",
"178",
"185",
"192",
"200",
"207",
"214",
"222",
"229",
"237",
"244",
"252",
"259",
"267",
"275",
"282",
"290",
"298",
"306",
"314",
"322",
"330",
"338",
"346",
"354",
"362",
"370",
"378",
"386",
"395"
] |
[
"nonn"
] | 23 | 1 | 2 |
[
"A114523",
"A114524",
"A354835"
] | null |
Artur Jasinski, Jun 07 2022
| 2022-06-09T02:28:32 |
oeisdata/seq/A354/A354835.seq
|
87e5c3df0138839d6218714181675334
|
A354836
|
Triangle T(n,k) where, if n-k and n+k are prime, T(n,k) = n+k is the greater term of a Goldbach partition of 2n into two odd primes, or zero otherwise.
|
[
"3",
"0",
"5",
"5",
"0",
"7",
"0",
"7",
"0",
"0",
"7",
"0",
"0",
"0",
"11",
"0",
"0",
"0",
"11",
"0",
"13",
"0",
"0",
"11",
"0",
"13",
"0",
"0",
"0",
"0",
"0",
"13",
"0",
"0",
"0",
"17",
"11",
"0",
"0",
"0",
"0",
"0",
"17",
"0",
"19",
"0",
"13",
"0",
"0",
"0",
"17",
"0",
"19",
"0",
"0",
"13",
"0",
"0",
"0",
"0",
"0",
"19",
"0",
"0",
"0",
"23",
"0",
"0",
"0",
"17",
"0",
"0",
"0",
"0",
"0",
"23",
"0",
"0",
"0",
"0",
"17",
"0",
"19",
"0",
"0",
"0",
"23",
"0",
"0",
"0",
"0"
] |
[
"nonn",
"tabl"
] | 39 | 3 | 1 |
[
"A061397",
"A085090",
"A145091",
"A354805",
"A354836"
] | null |
Jean-François Alcover, Jun 12 2022
| 2025-03-22T19:04:35 |
oeisdata/seq/A354/A354836.seq
|
2e2a1182c90a9bf4852a149f488ee590
|
A354837
|
Odd numbers k such that gcd(k, A007088(k)) != 1.
|
[
"21",
"33",
"63",
"69",
"81",
"99",
"111",
"123",
"159",
"165",
"183",
"189",
"203",
"207",
"219",
"231",
"237",
"243",
"249",
"259",
"261",
"273",
"297",
"303",
"315",
"321",
"363",
"399",
"411",
"423",
"429",
"435",
"441",
"459",
"483",
"489",
"495",
"513",
"543",
"561",
"567",
"573",
"585",
"591",
"603",
"615",
"621",
"627",
"633",
"663",
"669",
"693",
"707",
"711"
] |
[
"nonn",
"base"
] | 16 | 1 | 1 |
[
"A007088",
"A354837",
"A354838"
] | null |
Ctibor O. Zizka, Jun 08 2022
| 2022-07-02T14:43:07 |
oeisdata/seq/A354/A354837.seq
|
8b589b94c1fa816e598ea19b2fe1df34
|
A354838
|
For n >= 1, a(n) = A007088(n)/gcd(n, A007088(n)).
|
[
"1",
"5",
"11",
"25",
"101",
"55",
"111",
"125",
"1001",
"101",
"1011",
"275",
"1101",
"555",
"1111",
"625",
"10001",
"5005",
"10011",
"505",
"481",
"5055",
"10111",
"1375",
"11001",
"5505",
"11011",
"2775",
"11101",
"1111",
"11111",
"3125",
"9091",
"50005",
"100011",
"25025",
"100101",
"50055",
"100111",
"2525",
"101001",
"2405",
"101011",
"25275"
] |
[
"nonn",
"base",
"easy"
] | 16 | 1 | 2 |
[
"A007088",
"A076775",
"A354837",
"A354838"
] | null |
Ctibor O. Zizka, Jun 08 2022
| 2022-07-02T14:43:46 |
oeisdata/seq/A354/A354838.seq
|
f23844c82dd7105ee46f7262d8069c08
|
A354839
|
Beginning with 0, smallest positive integer not yet in the sequence such that the concatenation of two digits of the sequence separated by a comma is prime.
|
[
"0",
"2",
"3",
"1",
"7",
"9",
"70",
"5",
"30",
"20",
"21",
"10",
"22",
"31",
"11",
"12",
"32",
"33",
"13",
"14",
"15",
"34",
"16",
"17",
"18",
"35",
"36",
"19",
"71",
"37",
"38",
"39",
"72",
"90",
"23",
"73",
"74",
"75",
"91",
"76",
"77",
"92",
"93",
"78",
"94",
"79",
"700",
"24",
"100",
"25",
"95",
"96",
"101",
"97",
"98",
"99",
"701",
"102",
"300",
"26",
"103",
"104",
"105",
"301"
] |
[
"nonn",
"easy",
"base"
] | 20 | 0 | 2 |
[
"A074721",
"A152136",
"A152604",
"A152607",
"A152609",
"A158652",
"A354839"
] | null |
Carole Dubois, Jun 08 2022
| 2022-07-07T02:28:25 |
oeisdata/seq/A354/A354839.seq
|
40229764de1d500e9e3e6123e12f2280
|
A354840
|
a(n) is the smallest number k such that A275235(k) = n.
|
[
"1",
"4",
"9",
"16",
"35",
"57",
"93",
"222",
"427",
"819",
"1257",
"1270",
"1276",
"2651",
"5806",
"13673",
"19366",
"19372",
"27723",
"108857",
"113036",
"113038",
"115748",
"524856",
"560074",
"1006146",
"1219767",
"1652728",
"2704892",
"2704894",
"8756936",
"21401949",
"21401979",
"40268383",
"40268435",
"40268437",
"167540089",
"167540101"
] |
[
"nonn"
] | 34 | 0 | 2 |
[
"A275235",
"A354840",
"A354842"
] | null |
Bernard Schott, Jun 08 2022
| 2022-06-29T04:55:55 |
oeisdata/seq/A354/A354840.seq
|
7be4b7290e48963c481fd543c125d8ba
|
A354841
|
Number of primes between n and n+log(n), exclusive.
|
[
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"1",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"1",
"2",
"1",
"1",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"2",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"2",
"2",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"2",
"2",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"1"
] |
[
"nonn"
] | 17 | 1 | 28 |
[
"A275235",
"A354841",
"A354842"
] | null |
Bernard Schott, Jun 08 2022
| 2022-06-27T10:02:56 |
oeisdata/seq/A354/A354841.seq
|
9e6d6db3b0f8ff4d3693e5956f65ed69
|
A354842
|
a(n) is the smallest number k such that A354841(k) = n.
|
[
"1",
"4",
"28",
"1276",
"9430",
"463446",
"24786396",
"1340301868"
] |
[
"nonn",
"more"
] | 24 | 0 | 2 |
[
"A354840",
"A354841",
"A354842"
] | null |
Bernard Schott, Jun 24 2022
| 2022-06-30T05:58:37 |
oeisdata/seq/A354/A354842.seq
|
f17dac681713271d37eecece353aac0b
|
A354843
|
a(n) = n! * Sum_{d|n} (n/d)^d / d!.
|
[
"1",
"5",
"19",
"145",
"601",
"8521",
"35281",
"672001",
"4898881",
"82615681",
"439084801",
"21138606721",
"80951270401",
"3358578263041",
"49506372115201",
"1227603183206401",
"6046686277632001",
"611515751899852801",
"2311256907767808001",
"254421414038266675201",
"4015778465971464192001"
] |
[
"nonn"
] | 16 | 1 | 2 |
[
"A057625",
"A327579",
"A354843",
"A354845"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-10T11:08:07 |
oeisdata/seq/A354/A354843.seq
|
1834befc5428d0b605868cab3fa388c7
|
A354844
|
a(n) = n! * Sum_{d|n} (n/d)^d / (d! * (n/d)!).
|
[
"1",
"3",
"4",
"29",
"6",
"1027",
"8",
"26889",
"272170",
"861851",
"12",
"515592013",
"14",
"1530809295",
"668366899216",
"9382044672017",
"18",
"1405750464518419",
"20",
"1393382139935385621",
"4274473667143680022",
"30537988748467223",
"24",
"211745638285336995840025"
] |
[
"nonn"
] | 13 | 1 | 2 |
[
"A121860",
"A354843",
"A354844",
"A354845"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-08T15:39:07 |
oeisdata/seq/A354/A354844.seq
|
704811116fbefcc601d7a8e5e73ba316
|
A354845
|
a(n) = n! * Sum_{d|n} (n/d)^(d-1) / d!.
|
[
"1",
"3",
"7",
"49",
"121",
"2281",
"5041",
"134401",
"907201",
"13184641",
"39916801",
"3753509761",
"6227020801",
"393409336321",
"7638997766401",
"160474477363201",
"355687428096001",
"75792615407308801",
"121645100408832001",
"32459310892353945601",
"475723576423839744001",
"7306033564948620902401"
] |
[
"nonn"
] | 15 | 1 | 2 |
[
"A087906",
"A327578",
"A354843",
"A354845"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-10T11:08:03 |
oeisdata/seq/A354/A354845.seq
|
162d0cca25e24d05c3941b9f2b5db9a6
|
A354846
|
a(n) is the first composite k such that exactly n primes are the sum of all but one of the numbers from 1 to k-1 that are coprime to k, or -1 if there is no such k.
|
[
"4",
"8",
"15",
"10",
"18",
"22",
"34",
"42",
"39",
"64",
"60",
"66",
"74",
"82",
"75",
"115",
"102",
"136",
"106",
"156",
"162",
"160",
"203",
"190",
"186",
"210",
"213",
"268",
"226",
"246",
"240",
"291",
"304",
"300",
"306",
"312",
"364",
"330",
"344",
"342",
"362",
"368",
"386",
"412",
"448",
"420",
"466",
"450",
"472",
"474",
"496",
"518",
"495",
"539",
"483",
"510",
"594",
"660",
"564",
"609",
"655",
"708",
"636"
] |
[
"nonn"
] | 11 | 1 | 1 |
[
"A000010",
"A023896",
"A038566",
"A354846"
] | null |
J. M. Bergot and Robert Israel, Jun 08 2022
| 2022-06-14T15:30:36 |
oeisdata/seq/A354/A354846.seq
|
04aff2f3814cc4c68307a5bba449237a
|
A354847
|
Number of binary relations on [n] that are idempotent and reduced.
|
[
"1",
"2",
"6",
"32",
"318",
"5552",
"159126",
"7137272",
"484656318",
"48628712192",
"7076367228486",
"1471524821492552",
"432066672598422318",
"177354805872559516112",
"100928502119652298356726",
"79062670900333522721886872",
"84733519638342583432646258718",
"123582326772837258238596562116512",
"244150974458417420635453430918487846"
] |
[
"nonn"
] | 10 | 0 | 2 |
[
"A001035",
"A121337",
"A354847"
] | null |
Geoffrey Critzer, Jun 08 2022
| 2022-06-17T15:57:51 |
oeisdata/seq/A354/A354847.seq
|
43cb4ea78570c1ba4fddeab66aaa7e5b
|
A354848
|
a(n) = (n-1)! * Sum_{d|n} d^(n/d + 1).
|
[
"1",
"5",
"20",
"150",
"624",
"9600",
"36000",
"811440",
"6572160",
"105235200",
"442713600",
"39437798400",
"81430272000",
"4956708556800",
"137741700096000",
"3014189418240000",
"6067609067520000",
"1977977787641856000",
"2317659281473536000",
"1297953221362237440000"
] |
[
"nonn"
] | 13 | 1 | 2 |
[
"A038048",
"A078308",
"A354848",
"A354849",
"A354851"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-08T14:23:45 |
oeisdata/seq/A354/A354848.seq
|
7d84c1e0d5b073320ea98196ecbca9ba
|
A354849
|
a(n) = (n-1)! * Sum_{d|n} d^(n/d) / (d-1)!.
|
[
"1",
"3",
"5",
"34",
"29",
"1626",
"727",
"99128",
"584649",
"12353050",
"3628811",
"4648976652",
"479001613",
"803709466574",
"11133394272015",
"391883024332816",
"20922789888017",
"312756670075449618",
"6402373705728019",
"148614866400768768020",
"2663970255433783296021"
] |
[
"nonn"
] | 10 | 1 | 2 |
[
"A087906",
"A354849"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-08T15:39:22 |
oeisdata/seq/A354/A354849.seq
|
3a1787fd408ef756d8a1dcad4531d1bc
|
A354850
|
a(n) is the number of free polyominoes of width 4 and size n.
|
[
"1",
"3",
"21",
"59",
"198",
"703",
"2568",
"8421",
"26165",
"78074",
"229881",
"668082",
"1928220",
"5523946",
"15745682",
"44666804",
"126251748",
"355692380",
"999498933",
"2802212026",
"7841587533",
"21907928927",
"61123152811",
"170333279738",
"474197771123",
"1319004492132",
"3666181193067",
"10183729521212"
] |
[
"nonn"
] | 16 | 4 | 2 |
[
"A000105",
"A352720",
"A353067",
"A354850"
] | null |
John Mason, Jun 08 2022
| 2022-08-12T12:38:23 |
oeisdata/seq/A354/A354850.seq
|
1e147945fa53448e74fc6a4092ff5953
|
A354851
|
a(n) = (n-1)! * Sum_{d|n} d^(n/d).
|
[
"1",
"3",
"8",
"54",
"144",
"2880",
"5760",
"206640",
"1491840",
"24675840",
"43545600",
"10298534400",
"6706022400",
"1195587993600",
"33476463820800",
"775450900224000",
"376610217984000",
"553805325545472000",
"128047474114560000",
"339876410542276608000",
"6208765924866785280000"
] |
[
"nonn"
] | 13 | 1 | 2 |
[
"A055225",
"A318249",
"A354848",
"A354851"
] | null |
Seiichi Manyama, Jun 08 2022
| 2022-06-08T14:23:39 |
oeisdata/seq/A354/A354851.seq
|
0872ade8a59a898aab0b56e2c2f609d5
|
A354852
|
a(n) is the number of distinct ways to represent n using any mixed radix numeral system.
|
[
"1",
"2",
"3",
"5",
"6",
"8",
"9",
"13",
"15",
"18",
"19",
"20",
"21",
"27",
"30",
"35",
"36",
"40",
"41",
"47",
"50",
"58",
"59",
"51",
"54",
"69",
"77",
"84",
"85",
"79",
"80",
"94",
"102",
"116",
"118",
"101",
"102",
"122",
"132",
"129",
"130",
"135",
"136",
"161",
"165",
"182",
"183",
"140",
"144",
"169",
"186",
"219",
"220",
"210",
"213",
"230",
"240",
"269",
"270",
"198",
"199",
"248",
"262",
"265",
"276",
"282",
"283"
] |
[
"nonn",
"base"
] | 34 | 1 | 2 | null | null |
Max J. Folkers, Jun 08 2022
| 2022-07-13T07:17:39 |
oeisdata/seq/A354/A354852.seq
|
344508867a20120584dc6ac205d37673
|
A354853
|
a(1) = 4, a(2) = 9; let i = a(n-2) and j = a(n-1); a(n+1) = k such that (j, k) = 1 and (i, k) = m > 1 and only one of either omega(i) or omega(k) exceed omega(m), where omega = A001221, and neither i | k nor k | i.
|
[
"4",
"9",
"10",
"21",
"8",
"27",
"14",
"15",
"16",
"25",
"6",
"35",
"32",
"49",
"12",
"77",
"30",
"121",
"18",
"55",
"42",
"125",
"24",
"65",
"64",
"169",
"20",
"39",
"70",
"81",
"28",
"33",
"128",
"243",
"22",
"45",
"256",
"105",
"26",
"63",
"512",
"231",
"34",
"99",
"289",
"66",
"85",
"36",
"625",
"78",
"95",
"48",
"361",
"60",
"133",
"40",
"343",
"90",
"91",
"50",
"2197",
"110"
] |
[
"nonn"
] | 10 | 1 | 1 |
[
"A001221",
"A098550",
"A353917",
"A354853"
] | null |
Michael De Vlieger, Jun 23 2022
| 2022-08-03T23:25:53 |
oeisdata/seq/A354/A354853.seq
|
692972061c93f133368913a115cbea5d
|
A354854
|
Smallest number of powers of n with positive exponents that sum to a factorial.
|
[
"1",
"1",
"2",
"3",
"8",
"1",
"12",
"3",
"16",
"3",
"30",
"2",
"48",
"20",
"6",
"15",
"80",
"6",
"108",
"6",
"20",
"63",
"176",
"1",
"24",
"50",
"50",
"18"
] |
[
"nonn",
"hard",
"more"
] | 16 | 1 | 3 |
[
"A000142",
"A002034",
"A354854",
"A354861"
] | null |
Max Alekseyev, Jun 08 2022
| 2024-02-01T20:06:38 |
oeisdata/seq/A354/A354854.seq
|
65d7093014a0bb7e0ca780fb04f73610
|
A354855
|
a(n) = floor(n*(2+sqrt(5))^n), equivalently, floor(n*phi^(3n)), where phi = (1+sqrt(5))/2 is the golden ratio.
|
[
"0",
"4",
"35",
"228",
"1287",
"6820",
"34667",
"171332",
"829455",
"3952836",
"18604979",
"86693156",
"400623383",
"1838490212",
"8387044091",
"38065809540",
"171999313951",
"774138335108",
"3472202765123",
"15525625108324",
"69229056160039",
"307921937307684",
"1366491508589195",
"6051666872017348"
] |
[
"nonn",
"easy"
] | 48 | 0 | 2 |
[
"A000032",
"A000045",
"A001622",
"A004976",
"A098317",
"A128439",
"A354855"
] | null |
Jiale Wang, Jun 09 2022
| 2022-06-14T01:41:18 |
oeisdata/seq/A354/A354855.seq
|
348213e71b8588d98e56472455412b40
|
A354856
|
a(1) = 1, a(n) = the number of times a(n-1) appears among the first n-2 terms.
|
[
"1",
"0",
"0",
"1",
"1",
"2",
"0",
"2",
"1",
"3",
"0",
"3",
"1",
"4",
"0",
"4",
"1",
"5",
"0",
"5",
"1",
"6",
"0",
"6",
"1",
"7",
"0",
"7",
"1",
"8",
"0",
"8",
"1",
"9",
"0",
"9",
"1",
"10",
"0",
"10",
"1",
"11",
"0",
"11",
"1",
"12",
"0",
"12",
"1",
"13",
"0",
"13",
"1",
"14",
"0",
"14",
"1",
"15",
"0",
"15",
"1",
"16",
"0",
"16",
"1",
"17",
"0",
"17",
"1",
"18",
"0",
"18",
"1",
"19",
"0",
"19",
"1",
"20",
"0",
"20"
] |
[
"nonn"
] | 13 | 1 | 6 |
[
"A342585",
"A347317",
"A354856"
] | null |
Eric Fox, Jun 09 2022
| 2022-07-18T19:26:59 |
oeisdata/seq/A354/A354856.seq
|
b667bf88fb66b18b131de76265e26d3e
|
A354857
|
Decimal expansion of Sum_{k,m>=1} (-1)^(k+m+1)/floor(sqrt(k+m))^3.
|
[
"6",
"1",
"4",
"0",
"7",
"1",
"5",
"3",
"6",
"6",
"1",
"4",
"3",
"6",
"2",
"8",
"1",
"3",
"6",
"0",
"3",
"6",
"3",
"6",
"0",
"8",
"3",
"6",
"4",
"7",
"6",
"0",
"1",
"6",
"6",
"9",
"6",
"1",
"1",
"2",
"3",
"5",
"3",
"6",
"5",
"7",
"0",
"8",
"2",
"8",
"0",
"3",
"1",
"1",
"6",
"4",
"4",
"2",
"5",
"5",
"4",
"5",
"7",
"6",
"7",
"2",
"0",
"1",
"8",
"7",
"0",
"2",
"8",
"3",
"1",
"5",
"6",
"0",
"3",
"3",
"4",
"8",
"8",
"2",
"8",
"3",
"5",
"8",
"7",
"2",
"0",
"9",
"9",
"2",
"9",
"6",
"5",
"9",
"6",
"5",
"8",
"4",
"3",
"5",
"4"
] |
[
"nonn",
"cons"
] | 5 | 0 | 1 |
[
"A002117",
"A002162",
"A072691",
"A197070",
"A354857"
] | null |
Amiram Eldar, Jun 09 2022
| 2022-06-09T08:45:53 |
oeisdata/seq/A354/A354857.seq
|
1ae1bffd34d6d8dfc8e1f2c717cbb7b9
|
A354858
|
a(1) = 1, a(2) = 2; for n > 2, a(n) is the smallest positive number that shares a factor with a(n-1) and both the sum a(n) + a(n-1) is distinct from all previous sums, a(i) + a(i-1), i=2..n-1, and the product a(n) * a(n-1) is distinct from all previous products, a(i) * a(i-1), i=2..n-1.
|
[
"1",
"2",
"2",
"4",
"4",
"6",
"3",
"9",
"6",
"8",
"8",
"10",
"10",
"12",
"9",
"15",
"10",
"16",
"12",
"15",
"15",
"18",
"14",
"20",
"15",
"21",
"18",
"20",
"20",
"22",
"22",
"24",
"21",
"27",
"24",
"26",
"26",
"28",
"21",
"35",
"20",
"38",
"19",
"57",
"3",
"63",
"7",
"56",
"6",
"58",
"10",
"55",
"20",
"52",
"22",
"55",
"25",
"60",
"9",
"69",
"12",
"70",
"14",
"72",
"15",
"75",
"18",
"70",
"21",
"75",
"24",
"68",
"26",
"72",
"28",
"74",
"30",
"65"
] |
[
"nonn",
"look"
] | 14 | 1 | 2 |
[
"A064413",
"A088177",
"A354753",
"A354755",
"A354803",
"A354858"
] | null |
Scott R. Shannon, Jun 09 2022
| 2025-06-02T15:25:38 |
oeisdata/seq/A354/A354858.seq
|
ad13cb36506cc2fb8e656cb221711827
|
A354859
|
a(n) is the numerator of 1/prime(n) + 2/prime(n-1) + 3/prime(n-2) + ... + (n-1)/3 + n/2.
|
[
"1",
"4",
"71",
"124",
"11111",
"92402",
"257189",
"43708274",
"2344987003",
"1855369084",
"2729707472269",
"11281836318542",
"1705853427969059",
"120757830191824486",
"1124815045783478971",
"118422287191742563724",
"1291008724583331399881",
"113743044027018860349034",
"70575236921156825443680027",
"8002471039307070610187173702"
] |
[
"nonn",
"frac"
] | 7 | 1 | 2 |
[
"A024451",
"A027612",
"A120272",
"A354859",
"A354860"
] | null |
Ilya Gutkovskiy, Jun 09 2022
| 2022-06-09T17:18:40 |
oeisdata/seq/A354/A354859.seq
|
ad5349e10331bab4e556b93a236ce0c5
|
A354860
|
a(n) is the denominator of 1/prime(n) + 2/prime(n-1) + 3/prime(n-2) + ... + (n-1)/3 + n/2.
|
[
"2",
"3",
"30",
"35",
"2310",
"15015",
"34034",
"4849845",
"223092870",
"154040315",
"200560490130",
"742073813481",
"101416754509070",
"6541380665835015",
"55899071144408310",
"5431526412865007455",
"54936010004406075402",
"4511091590746421960895",
"2619440517026755685293030",
"278970415063349480483707695"
] |
[
"nonn",
"frac"
] | 6 | 1 | 1 |
[
"A002110",
"A027611",
"A354859",
"A354860"
] | null |
Ilya Gutkovskiy, Jun 09 2022
| 2022-06-09T17:18:58 |
oeisdata/seq/A354/A354860.seq
|
9435bf0af96e570814339afebcbb1cc3
|
A354861
|
Base-n digit sum of A002034(n)!.
|
[
"1",
"2",
"3",
"8",
"1",
"12",
"3",
"16",
"3",
"30",
"2",
"48",
"22",
"8",
"15",
"80",
"6",
"126",
"6",
"20",
"63",
"198",
"1",
"24",
"50",
"50",
"18",
"364",
"4",
"360",
"20",
"64",
"165",
"8",
"20",
"432",
"182",
"92",
"3",
"520",
"38",
"504",
"72",
"16",
"225",
"690",
"15",
"96",
"56",
"250",
"105",
"988",
"42",
"108",
"35",
"280",
"399",
"1334",
"2",
"1500",
"524",
"18",
"63",
"128",
"105",
"1650",
"227",
"340",
"3",
"2030",
"10",
"2160",
"853",
"62"
] |
[
"base",
"nonn"
] | 12 | 2 | 2 |
[
"A000142",
"A002034",
"A354854",
"A354861"
] | null |
Max Alekseyev, Jun 09 2022
| 2022-06-11T14:06:33 |
oeisdata/seq/A354/A354861.seq
|
16d75f02a80099e84aa6a288b6336066
|
A354862
|
a(n) = n! * Sum_{d|n} (n/d)! / d!.
|
[
"1",
"5",
"37",
"601",
"14401",
"520801",
"25401601",
"1626189601",
"131682257281",
"13168407228481",
"1593350922240001",
"229442707280223361",
"38775788043632640001",
"7600054676241325858561",
"1710012252750418295078401",
"437763137119219420513804801",
"126513546505547170185216000001"
] |
[
"nonn"
] | 25 | 1 | 2 |
[
"A020549",
"A057625",
"A121860",
"A354843",
"A354862",
"A354863"
] | null |
Seiichi Manyama, Jun 09 2022
| 2023-08-30T02:00:25 |
oeisdata/seq/A354/A354862.seq
|
1761fbe6311796164b59fad8344e02f6
|
A354863
|
a(n) = n! * Sum_{d|n} (n/d) / d!.
|
[
"1",
"5",
"19",
"121",
"601",
"5641",
"35281",
"406561",
"3447361",
"45420481",
"439084801",
"7565564161",
"80951270401",
"1525654690561",
"20737536019201",
"421943967244801",
"6046686277632001",
"150482493928166401",
"2311256907767808001",
"61410502863943833601",
"1132546296081328128001"
] |
[
"nonn"
] | 20 | 1 | 2 |
[
"A057625",
"A354843",
"A354862",
"A354863"
] | null |
Seiichi Manyama, Jun 09 2022
| 2023-08-30T02:00:32 |
oeisdata/seq/A354/A354863.seq
|
9fae138008820bfaaa9424c7b942e132
|
A354864
|
a(n) is the number of free equable polyominoes of size 2n and perimeter 2n.
|
[
"1",
"6",
"59",
"581",
"4812",
"36666",
"261515",
"1802151",
"12116488"
] |
[
"nonn",
"more"
] | 15 | 8 | 2 | null | null |
John Mason, Jun 09 2022
| 2022-09-08T11:55:01 |
oeisdata/seq/A354/A354864.seq
|
b6012788502ec5671d13c82d15ed646f
|
A354865
|
a(n) is the hafnian of the 2n X 2n symmetric matrix whose element M_{i,j} equals phi(abs(i-j)).
|
[
"1",
"1",
"4",
"49",
"1193",
"50228",
"3098989",
"271913937",
"31382686354",
"4668707087571",
"880702869805775"
] |
[
"nonn",
"hard",
"more"
] | 42 | 0 | 3 |
[
"A000010",
"A049581",
"A071083",
"A085510",
"A338456",
"A354865"
] | null |
Stefano Spezia, Sep 30 2022
| 2023-10-14T23:54:08 |
oeisdata/seq/A354/A354865.seq
|
7d39a08c3ef7c92e2b8c410a4773b6ea
|
A354866
|
Dirichlet inverse of A122111.
|
[
"1",
"-2",
"-4",
"1",
"-8",
"10",
"-16",
"-1",
"7",
"20",
"-32",
"-10",
"-64",
"40",
"46",
"2",
"-128",
"-27",
"-256",
"-20",
"92",
"80",
"-512",
"14",
"37",
"160",
"-17",
"-40",
"-1024",
"-150",
"-2048",
"-3",
"184",
"320",
"202",
"53",
"-4096",
"640",
"368",
"28",
"-8192",
"-300",
"-16384",
"-80",
"-146",
"1280",
"-32768",
"-26",
"175",
"-129",
"736",
"-160",
"-65536",
"85",
"404",
"56",
"1472",
"2560",
"-131072",
"242",
"-262144"
] |
[
"sign"
] | 13 | 1 | 2 |
[
"A122111",
"A354186",
"A354349",
"A354351",
"A354359",
"A354826",
"A354866",
"A354867",
"A354868",
"A354869"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-10T11:09:15 |
oeisdata/seq/A354/A354866.seq
|
bdb28a6edfa7bf49ab19edaf663222a4
|
A354867
|
Sum of A122111 and its Dirichlet inverse.
|
[
"2",
"0",
"0",
"4",
"0",
"16",
"0",
"4",
"16",
"32",
"0",
"0",
"0",
"64",
"64",
"9",
"0",
"-12",
"0",
"0",
"128",
"128",
"0",
"28",
"64",
"256",
"8",
"0",
"0",
"-120",
"0",
"8",
"256",
"512",
"256",
"74",
"0",
"1024",
"512",
"56",
"0",
"-240",
"0",
"0",
"-96",
"2048",
"0",
"-4",
"256",
"-84",
"1024",
"0",
"0",
"120",
"512",
"112",
"2048",
"4096",
"0",
"284",
"0",
"8192",
"-192",
"20",
"1024",
"-480",
"0",
"0",
"4096",
"-552",
"0",
"-64",
"0",
"16384",
"-264",
"0",
"1024"
] |
[
"sign"
] | 9 | 1 | 1 |
[
"A122111",
"A354352",
"A354866",
"A354867"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-10T11:09:20 |
oeisdata/seq/A354/A354867.seq
|
1deadd3a6fffc316c128280ea901d82d
|
A354868
|
Parity of Dirichlet inverse of A122111.
|
[
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"1"
] |
[
"nonn"
] | 9 | 1 | null |
[
"A000035",
"A354866",
"A354868",
"A354869"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-10T11:09:25 |
oeisdata/seq/A354/A354868.seq
|
b397a19ea4e0eeac749bd682f05e0b49
|
A354869
|
Positions of odd terms in A354866, the Dirichlet inverse of A122111.
|
[
"1",
"4",
"8",
"9",
"18",
"25",
"27",
"32",
"36",
"49",
"50",
"54",
"64",
"72",
"75",
"98",
"100",
"108",
"121",
"125",
"147",
"150",
"162",
"169",
"196",
"200",
"216",
"225",
"242",
"243",
"245",
"250",
"256",
"289",
"294",
"300",
"324",
"338",
"343",
"361",
"363",
"375",
"392",
"441",
"450",
"484",
"486",
"490",
"500",
"507",
"512",
"529",
"576",
"578",
"588",
"600",
"605",
"675",
"676",
"686",
"722",
"726",
"729",
"735",
"750",
"841",
"845"
] |
[
"nonn"
] | 9 | 1 | 2 |
[
"A122111",
"A354866",
"A354868",
"A354869"
] | null |
Antti Karttunen, Jun 09 2022
| 2022-06-10T11:09:38 |
oeisdata/seq/A354/A354869.seq
|
02d5c319f28d458ab41f69ee67cc7044
|
A354870
|
Number of nonprime squarefree divisors of n.
|
[
"1",
"1",
"1",
"1",
"1",
"2",
"1",
"1",
"1",
"2",
"1",
"2",
"1",
"2",
"2",
"1",
"1",
"2",
"1",
"2",
"2",
"2",
"1",
"2",
"1",
"2",
"1",
"2",
"1",
"5",
"1",
"1",
"2",
"2",
"2",
"2",
"1",
"2",
"2",
"2",
"1",
"5",
"1",
"2",
"2",
"2",
"1",
"2",
"1",
"2",
"2",
"2",
"1",
"2",
"2",
"2",
"2",
"2",
"1",
"5",
"1",
"2",
"2",
"1",
"2",
"5",
"1",
"2",
"2",
"5",
"1",
"2",
"1",
"2",
"2",
"2",
"2",
"5",
"1",
"2",
"1",
"2",
"1",
"5",
"2",
"2",
"2",
"2",
"1",
"5",
"2",
"2",
"2",
"2",
"2",
"2",
"1",
"2",
"2",
"2",
"1",
"5",
"1",
"2",
"5"
] |
[
"nonn"
] | 14 | 1 | 6 |
[
"A000469",
"A001221",
"A034444",
"A046523",
"A259936",
"A354819",
"A354870"
] | null |
Antti Karttunen, Jun 11 2022
| 2023-12-07T21:37:51 |
oeisdata/seq/A354/A354870.seq
|
69ee71178aa5c237f49b0bd0589b53e5
|
A354871
|
a(n) = gcd(A056239(n), A258851(n)).
|
[
"0",
"1",
"2",
"2",
"3",
"1",
"4",
"3",
"4",
"1",
"5",
"4",
"6",
"5",
"1",
"4",
"7",
"1",
"8",
"1",
"2",
"3",
"9",
"1",
"6",
"1",
"6",
"2",
"10",
"1",
"11",
"5",
"1",
"1",
"1",
"6",
"12",
"1",
"4",
"6",
"13",
"1",
"14",
"1",
"1",
"1",
"15",
"2",
"8",
"1",
"1",
"4",
"16",
"1",
"2",
"1",
"2",
"1",
"17",
"1",
"18",
"1",
"8",
"6",
"3",
"1",
"19",
"3",
"1",
"1",
"20",
"1",
"21",
"1",
"4",
"2",
"1",
"1",
"22",
"1",
"8",
"1",
"23",
"4",
"2",
"1",
"4",
"4",
"24",
"1",
"2",
"1",
"1",
"1",
"1",
"1",
"25",
"1",
"3",
"4"
] |
[
"nonn"
] | 9 | 1 | 3 |
[
"A056239",
"A258851",
"A278510",
"A354871",
"A354872",
"A354873"
] | null |
Antti Karttunen, Jun 11 2022
| 2022-06-12T22:53:16 |
oeisdata/seq/A354/A354871.seq
|
b3b21df50b414c21ed162e1fab0f80f5
|
A354872
|
a(n) = A056239(n) / gcd(A056239(n), A258851(n)).
|
[
"1",
"1",
"1",
"1",
"3",
"1",
"1",
"1",
"4",
"1",
"1",
"1",
"1",
"5",
"1",
"1",
"5",
"1",
"5",
"3",
"2",
"1",
"5",
"1",
"7",
"1",
"3",
"1",
"6",
"1",
"1",
"7",
"8",
"7",
"1",
"1",
"9",
"2",
"1",
"1",
"7",
"1",
"7",
"7",
"10",
"1",
"3",
"1",
"7",
"9",
"2",
"1",
"7",
"4",
"7",
"5",
"11",
"1",
"7",
"1",
"12",
"1",
"1",
"3",
"8",
"1",
"3",
"11",
"8",
"1",
"7",
"1",
"13",
"2",
"5",
"9",
"9",
"1",
"7",
"1",
"14",
"1",
"2",
"5",
"15",
"3",
"2",
"1",
"8",
"5",
"11",
"13",
"16",
"11",
"7",
"1",
"9",
"3",
"2",
"1",
"10"
] |
[
"nonn",
"frac"
] | 8 | 2 | 5 |
[
"A056239",
"A258851",
"A278510",
"A354871",
"A354872",
"A354873"
] | null |
Antti Karttunen, Jun 11 2022
| 2022-06-12T22:53:19 |
oeisdata/seq/A354/A354872.seq
|
6a60a18f31a01121b75d1a5149fbb283
|
A354873
|
a(n) = A258851(n) / gcd(A056239(n), A258851(n)).
|
[
"1",
"1",
"2",
"1",
"7",
"1",
"4",
"3",
"11",
"1",
"5",
"1",
"3",
"19",
"8",
"1",
"33",
"1",
"32",
"13",
"7",
"1",
"52",
"5",
"25",
"9",
"22",
"1",
"53",
"1",
"16",
"37",
"31",
"41",
"14",
"1",
"35",
"11",
"14",
"1",
"73",
"1",
"64",
"87",
"41",
"1",
"64",
"7",
"85",
"55",
"19",
"1",
"135",
"29",
"116",
"31",
"49",
"1",
"136",
"1",
"53",
"15",
"32",
"23",
"107",
"1",
"32",
"73",
"117",
"1",
"204",
"1",
"61",
"35",
"54",
"79",
"127",
"1",
"208",
"27",
"67",
"1",
"47",
"43",
"71",
"22"
] |
[
"nonn",
"frac"
] | 9 | 2 | 3 |
[
"A056239",
"A258851",
"A278510",
"A354871",
"A354872",
"A354873"
] | null |
Antti Karttunen, Jun 11 2022
| 2022-06-12T22:53:26 |
oeisdata/seq/A354/A354873.seq
|
19059b63b6515000a887259194ef89d5
|
A354874
|
a(n) = 1 if A003415(n) is squarefree, otherwise 0.
|
[
"0",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1",
"1",
"0",
"0",
"1"
] |
[
"nonn"
] | 10 | 0 | null |
[
"A003415",
"A008966",
"A010051",
"A212793",
"A229343",
"A328393",
"A341994",
"A354874"
] | null |
Antti Karttunen, Jun 11 2022
| 2022-06-12T15:38:51 |
oeisdata/seq/A354/A354874.seq
|
528ddd138bf3ccceff0baef83bd57a05
|
A354875
|
Dirichlet inverse of A344005, the smallest positive m such that n divides the oblong number m*(m+1).
|
[
"1",
"-1",
"-2",
"-2",
"-4",
"2",
"-6",
"-2",
"-4",
"4",
"-10",
"7",
"-12",
"6",
"11",
"0",
"-16",
"4",
"-18",
"16",
"18",
"10",
"-22",
"4",
"-8",
"12",
"-2",
"23",
"-28",
"-11",
"-30",
"4",
"29",
"16",
"34",
"12",
"-36",
"18",
"36",
"5",
"-40",
"-18",
"-42",
"39",
"27",
"22",
"-46",
"-6",
"-12",
"8",
"47",
"48",
"-52",
"2",
"70",
"25",
"54",
"28",
"-58",
"-78",
"-60",
"30",
"21",
"8",
"71",
"-29",
"-66",
"64",
"65",
"-34",
"-70",
"24",
"-72",
"36",
"16",
"71",
"99"
] |
[
"sign"
] | 11 | 1 | 3 |
[
"A002378",
"A344005",
"A345055",
"A354875",
"A354876",
"A354877"
] | null |
Antti Karttunen, Jun 12 2022
| 2022-06-12T15:38:57 |
oeisdata/seq/A354/A354875.seq
|
cb7f516c660de8ee1cc99acb86a69a85
|
A354876
|
Sum of A344005 and its Dirichlet inverse, where A344005(n) is the smallest positive m such that n divides the oblong number m*(m+1).
|
[
"2",
"0",
"0",
"1",
"0",
"4",
"0",
"5",
"4",
"8",
"0",
"10",
"0",
"12",
"16",
"15",
"0",
"12",
"0",
"20",
"24",
"20",
"0",
"12",
"16",
"24",
"24",
"30",
"0",
"-6",
"0",
"35",
"40",
"32",
"48",
"20",
"0",
"36",
"48",
"20",
"0",
"-12",
"0",
"50",
"36",
"44",
"0",
"9",
"36",
"32",
"64",
"60",
"0",
"28",
"80",
"32",
"72",
"56",
"0",
"-63",
"0",
"60",
"48",
"71",
"96",
"-18",
"0",
"80",
"88",
"-20",
"0",
"32",
"0",
"72",
"40",
"90",
"120",
"-24",
"0",
"10",
"88",
"80",
"0",
"-98",
"128"
] |
[
"sign"
] | 9 | 1 | 1 |
[
"A344005",
"A345065",
"A354875",
"A354876"
] | null |
Antti Karttunen, Jun 12 2022
| 2022-06-12T22:53:30 |
oeisdata/seq/A354/A354876.seq
|
8a1ce03f08d60f5da621b28f9aeff685
|
A354877
|
Positions of zeros in A354875, which is the Dirichlet inverse of A344005.
|
[
"16",
"100",
"147",
"256",
"294",
"2597",
"4096",
"5194",
"7399",
"14798",
"17003",
"31409",
"34006",
"36211",
"50617",
"60221",
"62818",
"65023",
"65536",
"72422",
"74627",
"79429",
"101234",
"103439",
"120442",
"122647",
"130046",
"132251",
"137053",
"149254",
"158858",
"175469",
"206878",
"218687",
"223489",
"245294",
"247499",
"264502",
"266707",
"274106",
"276311",
"281113",
"319529",
"324331"
] |
[
"nonn"
] | 6 | 1 | 1 |
[
"A344005",
"A345053",
"A354875",
"A354877"
] | null |
Antti Karttunen, Jun 12 2022
| 2022-06-12T15:39:05 |
oeisdata/seq/A354/A354877.seq
|
be0dac5692250fa286b0ab8fd0e720cd
|
A354878
|
a(n) is the index of the Stieltjes constant at the beginning of the first set of exactly n successive constants of the same sign.
|
[
"0",
"1",
"3",
"6",
"17",
"51",
"98",
"193",
"387",
"719",
"1269",
"2394",
"4380",
"7895",
"14227",
"25381",
"44840",
"79416",
"140313",
"245792",
"428589",
"746256"
] |
[
"nonn",
"more"
] | 27 | 1 | 3 |
[
"A114523",
"A114524",
"A354835",
"A354878",
"A354879"
] | null |
Artur Jasinski, Jun 09 2022
| 2022-08-20T13:21:11 |
oeisdata/seq/A354/A354878.seq
|
732ac2ca162b1a23859e865911c5303f
|
A354879
|
a(n) is the index of the Stieltjes constant at the beginning of the last set of exactly n successive constants of the same sign.
|
[
"0",
"1",
"10",
"22",
"63",
"131",
"276",
"567",
"1170",
"2164",
"4021",
"7441",
"13500",
"24362",
"43865",
"77904",
"137326",
"242183",
"425850",
"744892"
] |
[
"nonn",
"more"
] | 16 | 1 | 3 |
[
"A114523",
"A114524",
"A354835",
"A354878",
"A354879"
] | null |
Artur Jasinski, Jun 18 2022
| 2022-08-20T13:21:47 |
oeisdata/seq/A354/A354879.seq
|
4965487cdcac6452069075f4b7da8d0d
|
A354880
|
Numbers k where A133411(k) is not equal to A328521(k-1).
|
[
"17",
"19",
"21",
"51",
"52",
"55",
"56",
"57",
"58",
"59",
"60",
"61",
"88",
"89",
"90",
"91",
"92",
"93",
"94",
"95",
"96",
"97",
"98",
"99",
"101",
"102",
"103",
"104",
"105",
"107",
"108",
"109",
"110",
"111",
"112",
"113",
"114",
"115",
"116",
"117",
"118",
"119",
"120",
"121",
"127",
"158",
"159",
"160",
"161",
"162",
"163",
"164",
"165",
"166",
"167",
"168",
"169"
] |
[
"nonn"
] | 24 | 1 | 1 |
[
"A133411",
"A328521",
"A354880"
] | null |
J. Lowell, Jun 09 2022
| 2022-08-24T09:57:07 |
oeisdata/seq/A354/A354880.seq
|
6794690be35bb69befe4fa7de28d67cf
|
A354881
|
Primes p such that, if q is the next prime, the digit reversal of p*q is prime.
|
[
"5",
"31",
"37",
"41",
"53",
"103",
"197",
"263",
"277",
"337",
"349",
"353",
"359",
"373",
"397",
"401",
"421",
"431",
"439",
"547",
"569",
"587",
"599",
"857",
"859",
"863",
"877",
"883",
"983",
"1009",
"1013",
"1039",
"1069",
"1091",
"1097",
"1103",
"1117",
"1129",
"1153",
"1171",
"1193",
"1213",
"1223",
"1237",
"1249",
"1279",
"1291",
"1301",
"1367",
"1811",
"1871",
"1931",
"1979",
"2647",
"2663"
] |
[
"nonn",
"base"
] | 38 | 1 | 1 |
[
"A004086",
"A013636",
"A095179",
"A354881"
] | null |
J. M. Bergot and Robert Israel, Jul 13 2022
| 2024-02-10T14:09:04 |
oeisdata/seq/A354/A354881.seq
|
86d5420a872298671fb949d8c627b12e
|
A354882
|
a(n) is the smallest number k that is divisible by all numbers d with d < p = prime(n), and such that all of k+1, k-1, k+p, k-p are prime.
|
[
"12",
"60",
"93240",
"2383920",
"298378080",
"5133688560",
"73329656400",
"2168462696400",
"1215784751781600",
"150901712773812000",
"133573286426580000",
"657837749787992373600",
"10597036678652724300000",
"2761248653283183065402400",
"2053281233421697855815439200"
] |
[
"nonn"
] | 45 | 3 | 1 | null | null |
Florian Baur, Jun 10 2022
| 2025-05-30T02:30:40 |
oeisdata/seq/A354/A354882.seq
|
2e9760cbb68d0571c1637c52654af2e1
|
A354883
|
a(n) is the number of tuples of length n corresponding to cycles of a "pseudo-Collatz" iteration.
|
[
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"6",
"0",
"0",
"1",
"0",
"0",
"0",
"0",
"2",
"0",
"0",
"0",
"0",
"22",
"0",
"0",
"0",
"0",
"0",
"0",
"0",
"22",
"0",
"0",
"0",
"0",
"210",
"0",
"0",
"0",
"0",
"3033",
"0"
] |
[
"nonn",
"hard",
"more"
] | 46 | 1 | 13 |
[
"A006577",
"A208981",
"A347270",
"A354883"
] | null |
Markus Sigg, Jun 10 2022
| 2025-01-11T13:48:05 |
oeisdata/seq/A354/A354883.seq
|
9a56724c841dfa3b17466c70e9efb6c4
|
A354884
|
Numbers whose skew binary representation (A169683) is palindromic.
|
[
"0",
"1",
"2",
"4",
"8",
"11",
"16",
"26",
"32",
"39",
"50",
"57",
"64",
"86",
"98",
"120",
"128",
"143",
"166",
"181",
"194",
"209",
"232",
"247",
"256",
"302",
"326",
"372",
"386",
"432",
"456",
"502",
"512",
"543",
"590",
"621",
"646",
"677",
"724",
"755",
"770",
"801",
"848",
"879",
"904",
"935",
"982",
"1013",
"1024",
"1118",
"1166",
"1260",
"1286",
"1380",
"1428"
] |
[
"nonn",
"base"
] | 11 | 1 | 3 |
[
"A000079",
"A000295",
"A002113",
"A006995",
"A014190",
"A094202",
"A144414",
"A169683",
"A331191",
"A351712",
"A351717",
"A352087",
"A352105",
"A352319",
"A352341",
"A354884"
] | null |
Amiram Eldar, Jun 10 2022
| 2022-06-12T02:57:38 |
oeisdata/seq/A354/A354884.seq
|
c3686280418938313eb1639457f969b5
|
A354885
|
Numbers that are palindromes in both ternary and balanced ternary representations.
|
[
"0",
"1",
"4",
"10",
"13",
"16",
"28",
"40",
"52",
"82",
"91",
"112",
"121",
"160",
"244",
"280",
"328",
"364",
"484",
"730",
"757",
"820",
"847",
"976",
"1003",
"1066",
"1093",
"1312",
"1456",
"2188",
"2296",
"2440",
"2548",
"2920",
"3028",
"3172",
"3280",
"3904",
"4372",
"6562",
"6643",
"6832",
"6913",
"7300",
"7381",
"7570",
"7651",
"8752",
"8833",
"9022"
] |
[
"nonn",
"base"
] | 18 | 1 | 3 |
[
"A003462",
"A007089",
"A014190",
"A034472",
"A134027",
"A140267",
"A354885",
"A354886"
] | null |
Amiram Eldar, Jun 10 2022
| 2022-06-16T02:33:48 |
oeisdata/seq/A354/A354885.seq
|
5adfc7217b97c3a31d35d869c4eb73f2
|
A354886
|
Numbers that are palindromes in both ternary and balanced ternary representations with representations that are different.
|
[
"16",
"52",
"160",
"484",
"1312",
"1456",
"3904",
"4372",
"11680",
"12688",
"13120",
"35008",
"37960",
"39364",
"104992",
"106288",
"113776",
"116800",
"118096",
"314944",
"319156",
"341224",
"350080",
"354292",
"944800",
"948688",
"957760",
"1023568",
"1027456",
"1049920",
"1058992",
"1062880",
"2834368",
"2847004",
"2873572"
] |
[
"nonn",
"base"
] | 15 | 1 | 1 |
[
"A005836",
"A007089",
"A014190",
"A091077",
"A134027",
"A140267",
"A354885",
"A354886"
] | null |
Amiram Eldar, Jun 10 2022
| 2022-06-16T02:33:34 |
oeisdata/seq/A354/A354886.seq
|
863f96f9c289a472d4f82a7ec8fe57e3
|
A354887
|
Decimal expansion of Sum_{primes p} log(log(p)) / (p*log(p)).
|
[
"6",
"4",
"1",
"0",
"8",
"0",
"2",
"1",
"5",
"6",
"5",
"9",
"9",
"8",
"4",
"6",
"6",
"0",
"4",
"8",
"3",
"3",
"5",
"1",
"8",
"8",
"9",
"1",
"5",
"1",
"3",
"9",
"9",
"9",
"5",
"1",
"8",
"9",
"1",
"3",
"4",
"5",
"1",
"5",
"8",
"7",
"0",
"4",
"7",
"0",
"9",
"5",
"9",
"2",
"3",
"8",
"4",
"1",
"7",
"8",
"0",
"5",
"5",
"3",
"7",
"5",
"2",
"9",
"9",
"9",
"9",
"2",
"3",
"9",
"3",
"4",
"0",
"0",
"2",
"9",
"4",
"2",
"9",
"7",
"8",
"6",
"0",
"8",
"1",
"1",
"6",
"1",
"5",
"2",
"0",
"9",
"1",
"8",
"9",
"7",
"3",
"1",
"0",
"8",
"5",
"1"
] |
[
"nonn",
"cons"
] | 6 | 0 | 1 |
[
"A137245",
"A221711",
"A354887"
] | null |
Vaclav Kotesovec, Jun 10 2022
| 2022-06-10T07:32:43 |
oeisdata/seq/A354/A354887.seq
|
c886fb88cf37df0e982495fe0611c3ff
|
A354888
|
a(n) = n! * Sum_{d|n} d^d / d!.
|
[
"1",
"6",
"33",
"328",
"3245",
"52056",
"828583",
"17328256",
"389416329",
"10105386400",
"285351587411",
"8955841614336",
"302881333613053",
"11126513414294656",
"437935136609883375",
"18455736024587862016",
"827240617573764860177",
"39353706314004951028224"
] |
[
"nonn"
] | 17 | 1 | 2 |
[
"A327579",
"A354843",
"A354888",
"A354889"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:51:49 |
oeisdata/seq/A354/A354888.seq
|
80ed08840d70ef1ea44dac201b6c12c2
|
A354889
|
a(n) = n! * Sum_{d|n} d^(d-1) / d!.
|
[
"1",
"4",
"15",
"112",
"745",
"10296",
"122689",
"2285312",
"43953921",
"1026157600",
"25977341401",
"751135431168",
"23304312143281",
"795924137531264",
"29203006015310625",
"1154107395053387776",
"48661547563094964481",
"2186762596692631699968",
"104127471943011650364841"
] |
[
"nonn"
] | 19 | 1 | 2 |
[
"A262843",
"A327578",
"A354845",
"A354888",
"A354889"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:51:54 |
oeisdata/seq/A354/A354889.seq
|
111ed6bab3fc66272b04cc63803e998d
|
A354890
|
a(n) = n! * Sum_{d|n} d^n / d!.
|
[
"1",
"6",
"33",
"472",
"3245",
"157896",
"828583",
"132078976",
"1578211209",
"307174074400",
"285351587411",
"1835340563252736",
"302881333613053",
"11743240652094910336",
"336123967242674523375",
"149825956013958069846016",
"827240617573764860177",
"3551697093896307129060647424"
] |
[
"nonn"
] | 17 | 1 | 2 |
[
"A053042",
"A354888",
"A354890",
"A354891",
"A354892"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:52:03 |
oeisdata/seq/A354/A354890.seq
|
f7dfff2e2b00df5be067c93f18a9c42f
|
A354891
|
a(n) = n! * Sum_{d|n} d^(n - d) / d!.
|
[
"1",
"3",
"7",
"73",
"121",
"9721",
"5041",
"1760641",
"44452801",
"562615201",
"39916801",
"3156125575681",
"6227020801",
"192873372531841",
"222245415808416001",
"14806216643368550401",
"355687428096001",
"34884164976924636172801",
"121645100408832001"
] |
[
"nonn"
] | 19 | 1 | 2 |
[
"A038507",
"A342628",
"A354888",
"A354890",
"A354891",
"A354893"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:52:07 |
oeisdata/seq/A354/A354891.seq
|
1f2fb7a3333bc9978826d44a1ed52f01
|
A354892
|
a(n) = n! * Sum_{d|n} d^n / (n/d)!.
|
[
"1",
"9",
"163",
"6337",
"375001",
"33862441",
"4150656721",
"677778984961",
"140588337476161",
"36305718780965761",
"11388728893445164801",
"4271349071581227377281",
"1886009588552176549862401",
"968755330019156299208709121",
"572622623006183707899105964801"
] |
[
"nonn"
] | 16 | 1 | 2 |
[
"A354843",
"A354890",
"A354892"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:52:11 |
oeisdata/seq/A354/A354892.seq
|
799eb8eb495806ae844e05d170564c18
|
A354893
|
a(n) = n! * Sum_{d|n} d^(n - d) / (n/d)!.
|
[
"1",
"3",
"7",
"73",
"121",
"12361",
"5041",
"5308801",
"44452801",
"5681370241",
"39916801",
"16800125569921",
"6227020801",
"35897693762810881",
"2134168822456070401",
"190139202281277849601",
"355687428096001",
"3563095308471181273190401",
"121645100408832001"
] |
[
"nonn"
] | 16 | 1 | 2 |
[
"A038507",
"A342628",
"A354845",
"A354891",
"A354892",
"A354893"
] | null |
Seiichi Manyama, Jun 10 2022
| 2022-06-11T07:52:15 |
oeisdata/seq/A354/A354893.seq
|
f2211e386f7e8e98169759f8f2322f4f
|
A354894
|
a(n) is the numerator of the n-th hyperharmonic number of order n.
|
[
"1",
"5",
"47",
"319",
"1879",
"20417",
"263111",
"261395",
"8842385",
"33464927",
"166770367",
"3825136961",
"19081066231",
"57128792093",
"236266661971",
"7313175618421",
"14606816124167",
"102126365345729",
"3774664307989373",
"3771059091081773",
"154479849447926113",
"6637417807457499259",
"6632660439700528339"
] |
[
"nonn",
"frac"
] | 14 | 1 | 2 |
[
"A001008",
"A001700",
"A027612",
"A049281",
"A058806",
"A076174",
"A124837",
"A354894",
"A354895"
] | null |
Ilya Gutkovskiy, Jun 10 2022
| 2025-02-16T08:34:03 |
oeisdata/seq/A354/A354894.seq
|
1698152f07e1ff574d6823d1e32a9d63
|
A354895
|
a(n) is the denominator of the n-th hyperharmonic number of order n.
|
[
"1",
"2",
"6",
"12",
"20",
"60",
"210",
"56",
"504",
"504",
"660",
"3960",
"5148",
"4004",
"4290",
"34320",
"17680",
"31824",
"302328",
"77520",
"813960",
"8953560",
"2288132",
"27457584",
"49031400",
"12498200",
"168725700",
"42948360",
"10925460",
"163881900",
"2540169450",
"645122400",
"327523680",
"5567902560",
"1412149200"
] |
[
"nonn",
"frac"
] | 20 | 1 | 2 |
[
"A001700",
"A002805",
"A027611",
"A058806",
"A076175",
"A124838",
"A354894",
"A354895"
] | null |
Ilya Gutkovskiy, Jun 10 2022
| 2025-02-16T08:34:03 |
oeisdata/seq/A354/A354895.seq
|
e2ba4938871853b182296b7b01b4fc43
|
A354896
|
A fixed point of the two-block substitution 00->001, 01->010, 10->101, 11->110.
|
[
"0",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"1",
"0",
"0",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"0",
"1",
"0",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"0",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"1",
"0",
"1",
"0",
"1",
"1",
"0",
"1",
"1",
"0",
"1",
"0",
"1",
"0",
"1",
"0",
"1",
"1",
"1",
"0",
"0",
"1",
"0",
"1",
"0",
"1"
] |
[
"nonn"
] | 19 | 1 | null |
[
"A000002",
"A289001",
"A354896",
"A357448"
] | null |
Michel Dekking, Jun 11 2022
| 2025-06-02T15:25:44 |
oeisdata/seq/A354/A354896.seq
|
dfd3cbfab9faa2981802fa4e39df6e07
|
A354897
|
a(n) = n! * Sum_{d|n} d^n / (d! * (n/d)!).
|
[
"1",
"5",
"28",
"353",
"3126",
"94237",
"823544",
"72042497",
"585825130",
"157671732881",
"285311670612",
"790577855833537",
"302875106592254",
"5876819345289651137",
"55890419425648520176",
"73205730667453550166017",
"827240261886336764178",
"1474631675630757976051079425"
] |
[
"nonn"
] | 15 | 1 | 2 |
[
"A121860",
"A354844",
"A354890",
"A354892",
"A354893",
"A354897",
"A354898",
"A354899"
] | null |
Seiichi Manyama, Jun 11 2022
| 2022-06-11T07:52:19 |
oeisdata/seq/A354/A354897.seq
|
a7710ababc46c13e50c97b632b35b1eb
|
A354898
|
a(n) = n! * Sum_{d|n} d^(n - d) / (d! * (n/d)!).
|
[
"1",
"2",
"2",
"26",
"2",
"2582",
"2",
"268802",
"7348322",
"51120722",
"2",
"299332756802",
"2",
"7157951760962",
"18701679546950402",
"613777679843328002",
"2",
"3250742570192384467202",
"2",
"29411516073133093829529602",
"1146522800008167069616128002",
"4017001663590220290585602",
"2"
] |
[
"nonn"
] | 23 | 1 | 2 |
[
"A121860",
"A354845",
"A354891",
"A354893",
"A354897",
"A354898"
] | null |
Seiichi Manyama, Jun 11 2022
| 2023-07-11T08:57:05 |
oeisdata/seq/A354/A354898.seq
|
844423e7eb206f2dbf6bc643f84c8a8f
|
A354899
|
a(n) = n! * Sum_{d|n} d^d / (d! * (n/d)!).
|
[
"1",
"5",
"28",
"281",
"3126",
"48517",
"823544",
"16995617",
"387692650",
"10047310481",
"285311670612",
"8932562801857",
"302875106592254",
"11119129387084097",
"437899615088648176",
"18451106376806703617",
"827240261886336764178",
"39349894934527426209025"
] |
[
"nonn"
] | 14 | 1 | 2 |
[
"A121860",
"A354844",
"A354888",
"A354897",
"A354899",
"A354900"
] | null |
Seiichi Manyama, Jun 11 2022
| 2022-06-11T07:52:29 |
oeisdata/seq/A354/A354899.seq
|
167ed9c561fd8748304b174a163481c7
|
A354900
|
a(n) = n! * Sum_{d|n} d^d / (n/d)!.
|
[
"1",
"9",
"163",
"6193",
"375001",
"33602521",
"4150656721",
"676462516801",
"140587148681281",
"36288005670120961",
"11388728893445164801",
"4270826391670469473921",
"1886009588552176549862401",
"968725766890781857146309121",
"572622616354852243874626732801"
] |
[
"nonn"
] | 15 | 1 | 2 |
[
"A057625",
"A354843",
"A354888",
"A354892",
"A354899",
"A354900"
] | null |
Seiichi Manyama, Jun 11 2022
| 2022-06-11T07:52:33 |
oeisdata/seq/A354/A354900.seq
|
2ba9af64d4f9c03a382d85a31be863a5
|
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