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⌀ | timestamp
timestamp[us]date 1999-12-11 03:00:00
2025-04-28 00:58:08
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---|---|---|---|---|---|---|---|---|---|---|---|---|
A003701 | Expansion of e.g.f. exp(x)/cos(x). | [
"1",
"1",
"2",
"4",
"12",
"36",
"152",
"624",
"3472",
"18256",
"126752",
"814144",
"6781632",
"51475776",
"500231552",
"4381112064",
"48656756992",
"482962852096",
"6034272215552",
"66942218896384",
"929327412759552",
"11394877025289216",
"174008703107274752",
"2336793875186479104",
"38928735228629389312"
] | [
"nonn"
] | 75 | 0 | 3 | [
"A000795",
"A002084",
"A003701",
"A009739",
"A062161",
"A062272"
] | [
"M1259"
] | R. H. Hardin | 2024-05-12T17:42:30 | oeisdata/seq/A003/A003701.seq | d2da3cd3b5cbc1b6446d52c9b27dbf87 |
A003702 | Expansion of tan(x)/cosh(x). | [
"1",
"-1",
"21",
"-141",
"10441",
"-183481",
"29429661",
"-987318021",
"276117553681",
"-15085947275761",
"6514632269358501",
"-526614587249608701",
"324871912636292700121",
"-36433570919762397948841",
"30417659816002454665514541"
] | [
"sign"
] | 24 | 0 | 3 | null | [
"M5110"
] | R. H. Hardin, Simon Plouffe | 2023-10-29T01:42:32 | oeisdata/seq/A003/A003702.seq | 5635fdf7fe98b3002df1135e1fedfb2e |
A003703 | Expansion of e.g.f. cos(log(1+x)). | [
"1",
"0",
"-1",
"3",
"-10",
"40",
"-190",
"1050",
"-6620",
"46800",
"-365300",
"3103100",
"-28269800",
"271627200",
"-2691559000",
"26495469000",
"-238131478000",
"1394099824000",
"15194495654000",
"-936096296850000",
"29697351895900000",
"-819329864480400000",
"21683886333440500000",
"-570263312237604700000"
] | [
"easy",
"sign"
] | 72 | 0 | 4 | [
"A003703",
"A009024",
"A009454"
] | [
"M2856"
] | R. H. Hardin, Simon Plouffe | 2025-02-16T08:32:27 | oeisdata/seq/A003/A003703.seq | aaf482768603846a93f30068587f0934 |
A003704 | Expansion of log(1+sinh(x)). | [
"0",
"1",
"-1",
"3",
"-10",
"45",
"-256",
"1743",
"-13840",
"125625",
"-1282816",
"14554683",
"-181649920",
"2473184805",
"-36478744576",
"579439207623",
"-9861412096000",
"179018972217585",
"-3452931391553536",
"70518070842040563",
"-1520176422094766080"
] | [
"sign"
] | 28 | 0 | 4 | [
"A003704",
"A009344",
"A024293",
"A080795"
] | [
"M2867"
] | R. H. Hardin, Simon Plouffe | 2015-02-16T09:40:36 | oeisdata/seq/A003/A003704.seq | 2ca7f16e30c42c8c905e1c321f349b2d |
A003705 | E.g.f. tan(sin(x)) (odd powers only). | [
"1",
"1",
"-3",
"-107",
"-1095",
"41897",
"3027637",
"34528445",
"-11832720271",
"-1190157296815",
"22592230600813",
"23107531656941541",
"2633888933338158633",
"-362759000929143575815",
"-189312598480126813670107",
"-18315162183020706728157939"
] | [
"sign"
] | 21 | 0 | 3 | null | [
"M3172"
] | R. H. Hardin, Simon Plouffe | 2014-04-11T04:45:17 | oeisdata/seq/A003/A003705.seq | 25151ee8b944afe6a343a4fa361bc50e |
A003706 | E.g.f. sin(tan(x)), zeros omitted. | [
"1",
"1",
"-3",
"-275",
"-15015",
"-968167",
"-77000363",
"-7433044411",
"-843598411471",
"-107426835190735",
"-14072980460605907",
"-1424712499632406371",
"164163646840636339593",
"237037449673450822122569",
"155015924346163216960553093",
"92387809011599803660871724021"
] | [
"sign"
] | 37 | 0 | 3 | null | [
"M3176"
] | R. H. Hardin, Simon Plouffe | 2015-02-08T08:47:12 | oeisdata/seq/A003/A003706.seq | 949588ca77a8b083f8c41d15328e599c |
A003707 | Expansion of e.g.f. log(1 + tan(x)). | [
"0",
"1",
"-1",
"4",
"-14",
"80",
"-496",
"3904",
"-34544",
"354560",
"-4055296",
"51733504",
"-724212224",
"11070525440",
"-183218384896",
"3266330312704",
"-62380415842304",
"1270842139934720",
"-27507260369207296",
"630424777638805504",
"-15250924309151350784",
"388362339077351014400",
"-10384039093607251050496"
] | [
"sign"
] | 44 | 0 | 4 | [
"A002436",
"A003707",
"A024299"
] | [
"M3490"
] | R. H. Hardin, Simon Plouffe | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003707.seq | 94a7372921709586c30b45ed6ac8e4ef |
A003708 | Expansion of tan(log(1+x)). | [
"0",
"1",
"-1",
"4",
"-18",
"110",
"-810",
"7040",
"-70280",
"792200",
"-9945000",
"137550400",
"-2077719600",
"34026132400",
"-600433397200",
"11356783360000",
"-229193571984000",
"4915556301968000",
"-111644265232656000",
"2676908220027392000"
] | [
"sign"
] | 20 | 0 | 4 | null | [
"M3547"
] | R. H. Hardin, Simon Plouffe | 2015-02-16T09:51:00 | oeisdata/seq/A003/A003708.seq | 9f187983beb79de2962ab1d7b93c7e2e |
A003709 | E.g.f. cos(sin(x)) (even powers only). | [
"1",
"-1",
"5",
"-37",
"457",
"-8169",
"188685",
"-5497741",
"197920145",
"-8541537105",
"432381471509",
"-25340238127989",
"1699894200469849",
"-129076687233903673",
"10989863562589199389",
"-1041327644107761435101",
"109095160722852951673633",
"-12561989444137938396142753"
] | [
"sign"
] | 30 | 0 | 3 | null | [
"M3986"
] | R. H. Hardin, Simon Plouffe | 2023-02-11T12:21:59 | oeisdata/seq/A003/A003709.seq | 4696abfccd0c838e9871a96b7dc2d1ff |
A003710 | Expansion of e.g.f. cos(tan(x)) (even powers only). | [
"1",
"-1",
"-7",
"-97",
"-2063",
"-53409",
"-752343",
"166831871",
"43685848289",
"9398558916159",
"2116926930779225",
"524586454143030495",
"144620290378876829905",
"44287070229737735633567",
"14954349885478653319004041"
] | [
"sign"
] | 36 | 0 | 3 | [
"A003709",
"A003710",
"A003711"
] | [
"M4453"
] | R. H. Hardin, Simon Plouffe | 2021-10-02T07:56:28 | oeisdata/seq/A003/A003710.seq | d7170bcecad595cb9013368487d4b67d |
A003711 | Expansion of e.g.f. cos(tanh(x)) (even powers only). | [
"1",
"-1",
"9",
"-177",
"6097",
"-325249",
"24807321",
"-2558036145",
"342232522657",
"-57569080467073",
"11879658510739497",
"-2948163649552594737",
"865683568087537789297",
"-296699416391356495667713",
"117330699580950022391960505"
] | [
"sign"
] | 31 | 0 | 3 | [
"A003710",
"A003711"
] | [
"M4665"
] | R. H. Hardin, Simon Plouffe | 2021-10-02T07:56:44 | oeisdata/seq/A003/A003711.seq | 4794f51573cd268eb3284385d30dd34c |
A003712 | Expansion of e.g.f. sin(sin(x)) (odd powers only). | [
"1",
"-2",
"12",
"-128",
"1872",
"-37600",
"990784",
"-32333824",
"1272660224",
"-59527313920",
"3252626013184",
"-204354574172160",
"14594815769038848",
"-1174376539738169344",
"105595092426069327872",
"-10530693390637550272512"
] | [
"sign"
] | 43 | 0 | 2 | [
"A003712",
"A359553",
"A359554"
] | [
"M2042"
] | R. H. Hardin, Simon Plouffe | 2023-10-29T08:22:33 | oeisdata/seq/A003/A003712.seq | 561deb049b7ed906c0b260332a638210 |
A003713 | Expansion of e.g.f. log(1/(1+log(1-x))). | [
"0",
"1",
"2",
"7",
"35",
"228",
"1834",
"17582",
"195866",
"2487832",
"35499576",
"562356672",
"9794156448",
"186025364016",
"3826961710272",
"84775065603888",
"2011929826983504",
"50929108873336320",
"1369732445916318336",
"39005083331889816960",
"1172419218038422659456",
"37095226237402478348544"
] | [
"nonn",
"easy",
"nice"
] | 76 | 0 | 3 | [
"A000268",
"A000310",
"A000359",
"A000406",
"A001765",
"A003713",
"A007840",
"A039814",
"A089064",
"A238385"
] | [
"M1799",
"N0710"
] | N. J. A. Sloane, R. H. Hardin, Simon Plouffe | 2024-04-19T07:26:51 | oeisdata/seq/A003/A003713.seq | 48db93eed7ebd2b9fab32f2c657425b4 |
A003714 | Fibbinary numbers: if n = F(i1) + F(i2) + ... + F(ik) is the Zeckendorf representation of n (i.e., write n in Fibonacci number system) then a(n) = 2^(i1 - 2) + 2^(i2 - 2) + ... + 2^(ik - 2). Also numbers whose binary representation contains no two adjacent 1's. | [
"0",
"1",
"2",
"4",
"5",
"8",
"9",
"10",
"16",
"17",
"18",
"20",
"21",
"32",
"33",
"34",
"36",
"37",
"40",
"41",
"42",
"64",
"65",
"66",
"68",
"69",
"72",
"73",
"74",
"80",
"81",
"82",
"84",
"85",
"128",
"129",
"130",
"132",
"133",
"136",
"137",
"138",
"144",
"145",
"146",
"148",
"149",
"160",
"161",
"162",
"164",
"165",
"168",
"169",
"170",
"256",
"257",
"258",
"260",
"261",
"264"
] | [
"nonn",
"nice",
"easy",
"look"
] | 287 | 0 | 3 | [
"A000045",
"A001969",
"A003714",
"A003726",
"A003754",
"A004780",
"A005203",
"A005590",
"A007088",
"A007895",
"A014081",
"A014417",
"A022340",
"A022341",
"A037011",
"A048679",
"A048715",
"A048718",
"A048728",
"A056017",
"A060112",
"A072649",
"A083368",
"A085357",
"A089939",
"A106027",
"A106028",
"A107907",
"A107909",
"A116361",
"A129761",
"A215022",
"A215025",
"A242407",
"A278038"
] | null | N. J. A. Sloane | 2025-01-05T19:51:33 | oeisdata/seq/A003/A003714.seq | b003fa292794af7587ffa779c4885b55 |
A003715 | Expansion of e.g.f. sin(sin(sin(x))) (odd powers only). | [
"1",
"-3",
"33",
"-731",
"25857",
"-1311379",
"89060065",
"-7778778091",
"849264442881",
"-113234181108643",
"18073465545032353",
"-3395124358886313595",
"740061366713642835201",
"-185005977382236600650035"
] | [
"sign"
] | 31 | 0 | 2 | [
"A003712",
"A003715"
] | [
"M3134"
] | R. H. Hardin, Simon Plouffe | 2025-01-21T18:19:39 | oeisdata/seq/A003/A003715.seq | a2fbf567e40e31343ba36a8860021710 |
A003716 | Expansion of e.g.f. tan(sinh(x)) (odd powers only). | [
"1",
"3",
"37",
"1015",
"47881",
"3459819",
"354711853",
"48961863007",
"8754050024209",
"1967989239505875",
"543326939019354421",
"180718022989699819207",
"71275877445849484090393",
"32890432371345908634652347",
"17555593768891213894861569085"
] | [
"nonn"
] | 39 | 0 | 2 | [
"A003716",
"A003718",
"A003721"
] | [
"M3144"
] | R. H. Hardin | 2025-01-21T18:19:15 | oeisdata/seq/A003/A003716.seq | 8f0a8234ca6d6f8bbed21cce937dfae1 |
A003717 | Expansion of e.g.f. sin(tanh(x)) (odd powers only). | [
"1",
"-3",
"37",
"-959",
"41641",
"-2693691",
"241586893",
"-28607094455",
"4315903789009",
"-807258131578995",
"183184249105857781",
"-49548882107764546223",
"15742588857552887269753",
"-5802682207845642276301995"
] | [
"sign"
] | 28 | 0 | 2 | null | [
"M3143"
] | R. H. Hardin, Simon Plouffe | 2018-01-28T02:27:50 | oeisdata/seq/A003/A003717.seq | 5088e51912eb501b87aab9c9648b5ecb |
A003718 | E.g.f. tan(tan(x)), zeros omitted. | [
"1",
"4",
"72",
"2896",
"203904",
"22112000",
"3412366336",
"709998153728",
"191483931951104",
"64956739430973440",
"27065724289967718400",
"13588059904833174896640",
"8089418253144660155301888",
"5634743143901240164716904448",
"4539998748622480932947483426816"
] | [
"nonn"
] | 35 | 0 | 2 | null | [
"M3694"
] | R. H. Hardin | 2018-01-27T18:20:11 | oeisdata/seq/A003/A003718.seq | 0f7666af4ba768873918ced73d64cf7f |
A003719 | Expansion of tan(x)*cosh(x). | [
"1",
"5",
"41",
"685",
"19921",
"887765",
"56126201",
"4776869245",
"526589630881",
"72989204937125",
"12424192360405961",
"2547879762929443405",
"619570064016825283441",
"176273806836039238900085",
"58010159408189457446855321",
"21864887814006548202566779165"
] | [
"nonn"
] | 22 | 0 | 2 | [
"A003719",
"A009739",
"A062272"
] | [
"M3996"
] | R. H. Hardin | 2019-11-04T17:45:54 | oeisdata/seq/A003/A003719.seq | b499a5e227144e0c59bd19acc6b3dd75 |
A003720 | Expansion of e.g.f. tan(tan(tan(x))). | [
"1",
"6",
"168",
"10672",
"1198080",
"208521728",
"51874413568",
"17449541107712",
"7622674735988736",
"4193561606973095936",
"2836052065377836597248",
"2312174256451088534208512",
"2236165580390456719589769216",
"2530976708469616321520834969600",
"3314110602212685014002135203840000"
] | [
"nonn"
] | 42 | 0 | 2 | null | [
"M4301"
] | R. H. Hardin | 2024-10-31T22:28:36 | oeisdata/seq/A003/A003720.seq | 37f1ad0279bdb5471e0637d6e9ce0c81 |
A003721 | Expansion of e.g.f. tan(tanh(x)) (odd powers only). | [
"1",
"0",
"-8",
"112",
"-128",
"-109824",
"8141824",
"-353878016",
"-9666461696",
"5151942574080",
"-825073851170816",
"76429076694827008",
"2051308253366714368",
"-2361338488910424047616",
"171581865952588387581952"
] | [
"sign"
] | 29 | 0 | 3 | [
"A003716",
"A003718",
"A003721"
] | [
"M4571"
] | R. H. Hardin, Simon Plouffe | 2021-10-02T07:57:09 | oeisdata/seq/A003/A003721.seq | 559db6b66ac0f43240bf6c9e0cf5bb60 |
A003722 | E.g.f. sin(sinh(x)) (odd powers only). | [
"1",
"0",
"-8",
"-56",
"64",
"12672",
"309376",
"2917888",
"-163782656",
"-12716052480",
"-495644917760",
"-4004259037184",
"1359174582304768",
"153146435763437568",
"9620207941273255936",
"142966118908253962240",
"-62984506636368191946752"
] | [
"sign"
] | 21 | 0 | 3 | null | [
"M4541"
] | R. H. Hardin, Simon Plouffe | 2014-04-11T05:09:44 | oeisdata/seq/A003/A003722.seq | 75f96576feadf60d519bac9b337e47ce |
A003723 | E.g.f. exp(tanh(x)). | [
"1",
"1",
"1",
"-1",
"-7",
"-3",
"97",
"275",
"-2063",
"-15015",
"53409",
"968167",
"-752343",
"-77000363",
"-166831871",
"7433044411",
"43685848289",
"-843598411471",
"-9398558916159",
"107426835190735",
"2116926930779225",
"-14072980460605907"
] | [
"sign"
] | 29 | 0 | 5 | [
"A003706",
"A003710",
"A003723"
] | [
"M4327"
] | R. H. Hardin, Simon Plouffe | 2018-01-27T18:19:57 | oeisdata/seq/A003/A003723.seq | 1da5f58f40afab8af38bc0e46361fa4d |
A003724 | Number of partitions of n-set into odd blocks. | [
"1",
"1",
"1",
"2",
"5",
"12",
"37",
"128",
"457",
"1872",
"8169",
"37600",
"188685",
"990784",
"5497741",
"32333824",
"197920145",
"1272660224",
"8541537105",
"59527313920",
"432381471509",
"3252626013184",
"25340238127989",
"204354574172160",
"1699894200469849",
"14594815769038848",
"129076687233903673"
] | [
"nonn",
"nice",
"easy"
] | 65 | 0 | 4 | [
"A000009",
"A000110",
"A002017",
"A003724",
"A005046",
"A009623",
"A136630",
"A156289"
] | [
"M1427"
] | R. H. Hardin | 2024-08-20T09:14:04 | oeisdata/seq/A003/A003724.seq | ff4830e5ffda6e9b4c54910dd4ae8259 |
A003725 | E.g.f.: exp( x * exp(-x) ). | [
"1",
"1",
"-1",
"-2",
"9",
"-4",
"-95",
"414",
"49",
"-10088",
"55521",
"-13870",
"-2024759",
"15787188",
"-28612415",
"-616876274",
"7476967905",
"-32522642896",
"-209513308607",
"4924388011050",
"-38993940088199",
"11731860520780",
"3807154270837281"
] | [
"sign",
"easy"
] | 38 | 0 | 4 | [
"A000248",
"A003725",
"A069856",
"A072034",
"A215652",
"A292909",
"A292910",
"A292912"
] | [
"M1911"
] | R. H. Hardin | 2018-06-25T15:30:38 | oeisdata/seq/A003/A003725.seq | 2742c656737c30e060de950c65d51f52 |
A003726 | Numbers with no 3 adjacent 1's in binary expansion. | [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"8",
"9",
"10",
"11",
"12",
"13",
"16",
"17",
"18",
"19",
"20",
"21",
"22",
"24",
"25",
"26",
"27",
"32",
"33",
"34",
"35",
"36",
"37",
"38",
"40",
"41",
"42",
"43",
"44",
"45",
"48",
"49",
"50",
"51",
"52",
"53",
"54",
"64",
"65",
"66",
"67",
"68",
"69",
"70",
"72",
"73",
"74",
"75",
"76",
"77",
"80",
"81",
"82"
] | [
"nonn",
"base",
"easy"
] | 47 | 1 | 3 | [
"A000073",
"A003726",
"A003754",
"A003796",
"A004742",
"A004743",
"A004744",
"A004745",
"A004746",
"A004781",
"A007088",
"A014082",
"A063037",
"A278038"
] | null | N. J. A. Sloane | 2022-09-04T12:45:44 | oeisdata/seq/A003/A003726.seq | 8464922dde895b3dafa835dcd46d016b |
A003727 | Expansion of e.g.f. exp(x * cosh(x)). | [
"1",
"1",
"1",
"4",
"13",
"36",
"181",
"848",
"3865",
"23824",
"140521",
"871872",
"6324517",
"44942912",
"344747677",
"2860930816",
"23853473329",
"213856723200",
"1996865965009",
"19099352929280",
"193406280000061",
"2010469524579328",
"21615227339380357",
"242177953175506944"
] | [
"nonn"
] | 68 | 0 | 4 | [
"A003727",
"A009233",
"A191509"
] | [
"M3462"
] | R. H. Hardin | 2025-02-20T10:29:03 | oeisdata/seq/A003/A003727.seq | 3ee0afadd3ca380c9dad7003642ce1bb |
A003728 | Expansion of e.g.f. log(1+x*cos(x)). | [
"0",
"1",
"-1",
"-1",
"6",
"-31",
"120",
"-337",
"-784",
"24705",
"-288000",
"2451679",
"-14032128",
"-17936543",
"2173889536",
"-42895630065",
"583266662400",
"-5396647099903",
"5119183650816",
"1239561882325439",
"-36754121131294720",
"708575518706816481"
] | [
"sign"
] | 40 | 0 | 5 | null | [
"M4208"
] | R. H. Hardin, Simon Plouffe | 2022-10-29T09:37:49 | oeisdata/seq/A003/A003728.seq | 672440afc9ff23876e134a639bab6244 |
A003729 | Number of perfect matchings (or domino tilings) in graph C_{5} X P_{2n}. | [
"11",
"176",
"2911",
"48301",
"801701",
"13307111",
"220880176",
"3666315811",
"60855946601",
"1010127453401",
"16766766924211",
"278305942640176",
"4619507031938711",
"76677648402694901",
"1272746577484955101",
"21125893715367851311"
] | [
"nonn",
"easy"
] | 23 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003729.seq | db056e9e956683b4f620b5c0ca978fa3 |
A003730 | Number of 2-factors in C_5 X P_n. | [
"1",
"11",
"81",
"666",
"5431",
"44466",
"364061",
"2981201",
"24412606",
"199912706",
"1637069691",
"13405842666",
"109779463516",
"898976005896",
"7361648869421",
"60284005131851",
"493661316969811",
"4042556485091321",
"33104199931650186"
] | [
"nonn",
"easy"
] | 26 | 1 | 2 | null | null | Frans J. Faase | 2020-06-23T09:42:40 | oeisdata/seq/A003/A003730.seq | f056f6d522a1c3e7fd122fcdc77ea464 |
A003731 | Number of Hamiltonian cycles in C_5 X P_n. | [
"1",
"5",
"30",
"160",
"850",
"4520",
"24040",
"127860",
"680040",
"3616880",
"19236840",
"102313600",
"544168000",
"2894227280",
"15393318880",
"81871340160",
"435443220000",
"2315960597120",
"12317733383040",
"65513444349760",
"348441653760640",
"1853231611930880",
"9856649945242240",
"52423856531251200"
] | [
"nonn",
"easy"
] | 31 | 1 | 2 | [
"A003731",
"A359855"
] | null | Frans J. Faase | 2025-02-18T17:38:36 | oeisdata/seq/A003/A003731.seq | 4ac839d69778ab51f249b6e2d26ff093 |
A003732 | Number of Hamiltonian paths in C_5 X P_n. | [
"5",
"130",
"1660",
"16820",
"152230",
"1275680",
"10154290",
"77897010",
"581452680",
"4250594690",
"30572999140",
"217099260110",
"1525905283670",
"10636695448300",
"73649615037480",
"507171127397480",
"3476871213780220",
"23747634842538120"
] | [
"nonn"
] | 17 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003732.seq | b734c30df3739732fa2fa5560febd92e |
A003733 | Number of spanning trees in C_5 X P_n. | [
"5",
"1805",
"508805",
"140503005",
"38720000000",
"10668237057005",
"2939274449134805",
"809816405722655805",
"223117116976138566005",
"61472262298219520000000",
"16936571572967914651674005",
"4666290873812984282155907805",
"1285636259054921313298518442805"
] | [
"nonn"
] | 41 | 1 | 1 | [
"A003733",
"A143699"
] | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003733.seq | 23831e740707b99ca8b80d7dbbef1232 |
A003734 | Number of spanning trees with degrees 1 and 3 in C_5 X P_2n. | [
"0",
"260",
"27420",
"2504560",
"223723080",
"19923617840",
"1773563554900",
"157870122686600",
"14052371971981100",
"1250831588811052320",
"111339169110472830220",
"9910535055491682625400",
"882157695038695625086700",
"78522722964255506997330800",
"6989473714324564174042717340"
] | [
"nonn"
] | 20 | 1 | 2 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003734.seq | 2be689cd25276ab8ce8771a445ab6b22 |
A003735 | Number of perfect matchings (or domino tilings) in W_5 X P_2n. | [
"29",
"1189",
"49401",
"2053641",
"85373589",
"3549138989",
"147544320241",
"6133692298001",
"254989017189389",
"10600368542888629",
"440677071050573801",
"18319766917914642201",
"761586844367955639429",
"31660584117320436988989",
"1316189472103884945976801",
"54716448693989525183595041"
] | [
"nonn",
"easy"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003735.seq | 105269179c28f352b3e0514c5e42090d |
A003736 | Number of 2-factors in W_5 X P_n. | [
"4",
"156",
"3832",
"101476",
"2653176",
"69537644",
"1821675752",
"47726949876",
"1250396334280",
"32759217743932",
"858260185404312",
"22485600623006756",
"589101327485494424",
"15433894026086119116",
"404353331486123621320",
"10593672372980858817748",
"277544131820420163065832",
"7271392053421269671583068"
] | [
"nonn",
"easy"
] | 25 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003736.seq | dfd4c5e09e44bb3015627f2cfdd5989e |
A003737 | Number of Hamiltonian cycles in W_5 X P_n. | [
"4",
"92",
"1432",
"22632",
"357952",
"5660752",
"89521984",
"1415743552",
"22389250144",
"354074376800",
"5599502597088",
"88553228914208",
"1400423379497056",
"22146969296658080",
"350242830993566816",
"5538908688560111008",
"87594967677616439904",
"1385268975148564102048",
"21907310252932371420768"
] | [
"nonn",
"easy"
] | 25 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003737.seq | fb272d790d8755809bfdc232fcaaf201 |
A003738 | Number of Hamiltonian paths in W_5 X P_n. | [
"24",
"1920",
"70184",
"2154592",
"58772296",
"2907860192",
"155789578368",
"8657124623872",
"486468905555968",
"27396295154262016",
"1543844945278500864",
"87013000712650358784",
"4904346018649432653824",
"276428194803652843536384",
"15580616335530275077357568",
"878187384790382283606458368",
"49498247371236620586614521856"
] | [
"nonn",
"easy"
] | 41 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003738.seq | 3c1ed220116add84246de8818693e22d |
A003739 | Number of spanning trees in W_5 X P_n. | [
"45",
"55125",
"59719680",
"64416925125",
"69471840376125",
"74922901143552000",
"80801651828175064605",
"87141671714980415665125",
"93979154798291442260459520",
"101353134069755356151903203125"
] | [
"nonn",
"easy"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003739.seq | 3c95b4c5bef7463e99b6feba4bf7ae42 |
A003740 | Number of spanning trees with degrees 1 and 3 in W_5 X P_2n. | [
"208",
"335344",
"503672968",
"757005488704",
"1137734095903816",
"1709944335224262352",
"2569941155563565968488",
"3862463470575397280285088",
"5805045002479537990606632936"
] | [
"nonn"
] | 18 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003740.seq | 2d38610d2676b6ff964213fb24c32c91 |
A003741 | Number of perfect matchings (or domino tilings) in O_5 X P_2n. | [
"40",
"2197",
"121735",
"6748096",
"374079619",
"20737143595",
"1149566489968",
"63726386332735",
"3532681575875629",
"195834721732832344",
"10856126548559080585",
"601810968956118729913",
"33361479413223474759160",
"1849398508920455533993789",
"102521677843870104359906191",
"5683304262020707489694083600"
] | [
"nonn",
"easy"
] | 27 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003741.seq | eee29c391ee594120ff0d4a9f8c37bf7 |
A003742 | Number of 2-factors in O_5 X P_n. | [
"6",
"327",
"11040",
"406731",
"14683587",
"532938234",
"19313709882",
"700238873703",
"25384576377228",
"920260033555854",
"33361543878231264",
"1209436952734137963",
"43844979765366718719",
"1589485790652572990865",
"57622670964678806649843",
"2088960040762846005003294"
] | [
"nonn",
"easy"
] | 27 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003742.seq | 51c85f2d8baddb9e24661a7280b481fd |
A003743 | Number of Hamiltonian cycles in O_5 X P_n. | [
"6",
"204",
"4152",
"90012",
"1916640",
"41086080",
"878480688",
"18801691584",
"402251873664",
"8607198763968",
"184162678606848",
"3940493249544192",
"84313290894281472",
"1804026190433055744",
"38600161433802577920",
"825915469757893794816",
"17671849531462458580992"
] | [
"nonn",
"easy"
] | 27 | 1 | 1 | null | null | Frans J. Faase | 2024-05-17T18:28:26 | oeisdata/seq/A003/A003743.seq | c4211dbe060c806a027e972165c161ee |
A003744 | Number of Hamiltonian paths in O_5 X P_n. | [
"36",
"3960",
"197172",
"8372376",
"313590732",
"10961493288",
"364496212992",
"11715923002644",
"367218115613412",
"11297962590845364",
"342721436917704060",
"10284809936813182116",
"306078425919342660924"
] | [
"nonn"
] | 17 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003744.seq | 39276fc7f95b789b9c691e8651e932fd |
A003745 | Number of spanning trees in (K_5 - e) X P_n. | [
"75",
"128625",
"199065600",
"307147367625",
"473862674071875",
"731065883885568000",
"1127873690900648512275",
"1740060755637940344737625",
"2684530596730102104276172800"
] | [
"nonn"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2024-03-03T10:36:40 | oeisdata/seq/A003/A003745.seq | a1e3938034aecaba31147b5b438f54a6 |
A003746 | Number of spanning trees with degrees 1 and 3 in O_5 X P_2n. | [
"540",
"1751352",
"5386703316",
"16582103036544",
"51045000577926816",
"157132783947988296192",
"483704801377335372564480",
"1488997578825205151673656448",
"4583609224965381313988566950144"
] | [
"nonn"
] | 15 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003746.seq | 0c70cca0f7844d391f6c8141f047d4a7 |
A003747 | Number of perfect matchings (or domino tilings) in K_5 X P_2n. | [
"56",
"4181",
"313501",
"23508376",
"1762814681",
"132187592681",
"9912306636376",
"743290810135501",
"55736898453526181",
"4179524093204328056",
"313408570091871078001",
"23501463232797126522001",
"1762296333889692618072056",
"132148723578494149228882181",
"9909391972053171499548091501"
] | [
"nonn",
"easy"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003747.seq | 55dbdd7a9a0892f2f33f4f27130ed4a4 |
A003748 | Number of 2-factors in K_5 X P_n. | [
"12",
"814",
"41278",
"2169266",
"113488662",
"5940718514",
"310952704838",
"16276223002786",
"851946706852182",
"44593472067545554",
"2334157405518854758",
"122176869250651741826",
"6395107433748612174582",
"334739295101566253176754",
"17521268695699930046150918",
"917116278846033398175880546"
] | [
"nonn",
"easy"
] | 27 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003748.seq | 66ca44929ec7d14b3d0d0ae9d04e783a |
A003749 | Number of Hamiltonian cycles in K_5 X P_n. | [
"12",
"480",
"13440",
"382080",
"10859520",
"308651520",
"8772556800",
"249335408640",
"7086662123520",
"201418564362240",
"5724759747624960",
"162710295705845760",
"4624585396735180800",
"131440914657055211520",
"3735840635158368092160"
] | [
"nonn",
"easy"
] | 25 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003749.seq | 2535f2b6846cdbe65c38ba0ba8b526a4 |
A003750 | Number of Hamiltonian paths in K_5 X P_n. | [
"60",
"8760",
"617400",
"36021240",
"1871009400",
"90539967480",
"4181860331640",
"187073020183800",
"8181829090755960",
"352081040138505720",
"14972983484769861240",
"631272829225942738680",
"26446059244840564688760",
"1102721870861189212971000",
"45821243162927769017364600"
] | [
"nonn",
"easy"
] | 25 | 1 | 1 | null | null | Frans J. Faase | 2020-06-23T14:32:15 | oeisdata/seq/A003/A003750.seq | df9a1e33d931c185413fa60c12a880f2 |
A003751 | Number of spanning trees in K_5 x P_n. | [
"125",
"300125",
"663552000",
"1464514260125",
"3232184906328125",
"7133430745792512000",
"15743478429512478120125",
"34745849760772636969860125",
"76684074678559433693601792000",
"169241718069731503830237768828125",
"373516395095822778319979141039280125"
] | [
"nonn"
] | 29 | 1 | 1 | null | null | Frans J. Faase | 2023-08-23T09:37:13 | oeisdata/seq/A003/A003751.seq | ec39671bbf71b0d1fc911de778756973 |
A003752 | Number of Hamiltonian paths in C_4 X P_n. | [
"4",
"72",
"584",
"4016",
"24656",
"140624",
"761960",
"3976704",
"20173280",
"100097008",
"488003448",
"2345542720",
"11142878992",
"52426883056",
"244682331976",
"1134222633280",
"5227498311360",
"23975219772016",
"109500177006104",
"498322800625728",
"2260840364623472",
"10230065398683632"
] | [
"nonn",
"easy"
] | 29 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003752.seq | c86b6f317dd9e3f4266c41b47aabdce7 |
A003753 | Number of spanning trees in C_4 X P_n. | [
"4",
"384",
"31500",
"2558976",
"207746836",
"16864848000",
"1369080572444",
"111141302329344",
"9022397309950500",
"732433860440996736",
"59458627396289740076",
"4826822683620921984000",
"391839136544897998002484",
"31809312044806091140235904",
"2582264604005182130741437500"
] | [
"nonn"
] | 34 | 1 | 1 | [
"A003753",
"A173958"
] | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003753.seq | 7688d43576d01d88ef219e051433ca2c |
A003754 | Numbers with no adjacent 0's in binary expansion. | [
"0",
"1",
"2",
"3",
"5",
"6",
"7",
"10",
"11",
"13",
"14",
"15",
"21",
"22",
"23",
"26",
"27",
"29",
"30",
"31",
"42",
"43",
"45",
"46",
"47",
"53",
"54",
"55",
"58",
"59",
"61",
"62",
"63",
"85",
"86",
"87",
"90",
"91",
"93",
"94",
"95",
"106",
"107",
"109",
"110",
"111",
"117",
"118",
"119",
"122",
"123",
"125",
"126",
"127",
"170",
"171",
"173",
"174",
"175",
"181"
] | [
"nonn",
"easy",
"base",
"nice"
] | 98 | 1 | 3 | [
"A000071",
"A000225",
"A000975",
"A001911",
"A003726",
"A003754",
"A003796",
"A004742",
"A004743",
"A004744",
"A004745",
"A004746",
"A004753",
"A007088",
"A023416",
"A023705",
"A066099",
"A087116",
"A104326",
"A107345",
"A107359",
"A107782",
"A196168",
"A280873",
"A318928",
"A333766"
] | null | N. J. A. Sloane | 2022-09-17T14:29:03 | oeisdata/seq/A003/A003754.seq | 2bae703e7b9486055b254b2cbc4e047b |
A003755 | Number of spanning trees in S_4 X P_n. | [
"1",
"54",
"2240",
"89964",
"3596725",
"143700480",
"5740732439",
"229334969304",
"9161621922880",
"365994298083150",
"14620972301965259",
"584087869159280640",
"23333512405041243469",
"932141942728566562746",
"37237797134599264280000",
"1487599121840339002010544",
"59427552583207598523644161"
] | [
"nonn"
] | 38 | 1 | 2 | null | null | Frans J. Faase | 2023-06-25T20:12:48 | oeisdata/seq/A003/A003755.seq | f0a0fedad9f82eadfa3df8de3e2998e5 |
A003756 | Number of spanning trees with degrees 1 and 3 in S_4 X P_{2n-1}. | [
"1",
"0",
"24",
"54",
"492",
"1944",
"11976",
"57024",
"313440",
"1587168",
"8417472",
"43483392",
"227995008",
"1185394176",
"6192642048",
"32263570944",
"168350991360",
"877689686016",
"4578049517568",
"23872537976832",
"124504626978816",
"649282059657216",
"3386128302882816",
"17658788068196352"
] | [
"nonn",
"easy"
] | 23 | 1 | 3 | null | null | Frans J. Faase; corrections Feb 07 2009 | 2019-01-27T21:33:10 | oeisdata/seq/A003/A003756.seq | 5b518798df1162be67ea2f6b5f0c1478 |
A003757 | Number of perfect matchings (or domino tilings) in D_4 X P_(n-1). | [
"0",
"1",
"1",
"6",
"13",
"49",
"132",
"433",
"1261",
"3942",
"11809",
"36289",
"109824",
"335425",
"1018849",
"3104934",
"9443629",
"28756657",
"87504516",
"266383153",
"810723277",
"2467770054",
"7510988353",
"22861948801",
"69584925696",
"211799836801",
"644660351425"
] | [
"nonn"
] | 44 | 0 | 4 | null | null | Frans J. Faase | 2023-03-21T12:52:35 | oeisdata/seq/A003/A003757.seq | 93516805ed754b53a5e46e92e1fd89c4 |
A003758 | Number of 2-factors in D_4 X P_n. | [
"0",
"3",
"7",
"46",
"193",
"963",
"4470",
"21367",
"100909",
"478924",
"2268405",
"10753173",
"50957032",
"241508575",
"1144553203",
"5424374574",
"25707458901",
"121834519567",
"577405414054",
"2736475971043",
"12968875078785",
"61462896633780"
] | [
"nonn"
] | 16 | 1 | 2 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003758.seq | ee0982d954a9051095531b5065d4b022 |
A003759 | Number of Hamiltonian cycles in D_4 X P_n. | [
"0",
"2",
"6",
"24",
"86",
"320",
"1176",
"4340",
"15994",
"58970",
"217388",
"801426",
"2954496",
"10891960",
"40153904",
"148030026",
"545722366",
"2011841328",
"7416784934",
"27342464080",
"100799786752",
"371605023956",
"1369946288898",
"5050396829138"
] | [
"nonn"
] | 23 | 1 | 2 | null | null | Frans J. Faase, Mar 15 1996 | 2023-06-28T20:37:09 | oeisdata/seq/A003/A003759.seq | 23dc2b39f888d40b5f478d68d85e91d4 |
A003760 | Number of Hamiltonian paths in D_4 X P_n. | [
"2",
"40",
"240",
"1558",
"8300",
"43438",
"212700",
"1014700",
"4691580",
"21257258",
"94520524",
"414149254",
"1791339472",
"7664373014",
"32481662616",
"136520499746",
"569599125312",
"2361080470268",
"9730117780704",
"39888323454064"
] | [
"nonn"
] | 14 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003760.seq | ef9056d9f70a342d27f35cab69522470 |
A003761 | Number of spanning trees in D_4 X P_n. | [
"3",
"270",
"20160",
"1477980",
"108097935",
"7903526400",
"577834413429",
"42245731959480",
"3088601154192960",
"225808743709815750",
"16508958287605688193",
"1206975861055570636800",
"88242438021480689844999",
"6451436286916714206370530",
"471666820375043557337304000"
] | [
"nonn",
"easy"
] | 39 | 1 | 1 | null | null | Frans J. Faase | 2023-08-23T09:37:24 | oeisdata/seq/A003/A003761.seq | 43c8860b596153c2ca7c52f19383dccd |
A003762 | Number of spanning trees with degrees 1 and 3 in D_4 X P_n. | [
"1",
"4",
"16",
"92",
"432",
"1884",
"8582",
"39736",
"181936",
"829672",
"3793850",
"17366388",
"79441576",
"363298928",
"1661695126",
"7601017276",
"34767611570",
"159026305464",
"727389859704",
"3327116203688",
"15218354613018",
"69609219627912"
] | [
"nonn",
"easy"
] | 27 | 1 | 2 | null | null | Frans J. Faase | 2020-06-23T14:31:25 | oeisdata/seq/A003/A003762.seq | be7129835217569d3f5d3e9622355b59 |
A003763 | Number of (undirected) Hamiltonian cycles on a 2n X 2n square grid of points. | [
"1",
"6",
"1072",
"4638576",
"467260456608",
"1076226888605605706",
"56126499620491437281263608",
"65882516522625836326159786165530572",
"1733926377888966183927790794055670829347983946",
"1020460427390768793543026965678152831571073052662428097106"
] | [
"nonn",
"walk"
] | 91 | 1 | 2 | [
"A003763",
"A120443",
"A140519",
"A140521",
"A222200",
"A222201"
] | null | Jeffrey Shallit, Feb 14 2002 | 2025-02-16T08:32:27 | oeisdata/seq/A003/A003763.seq | ca8a7e9eb99bae79ea948a75693834f4 |
A003764 | Number of 2-factors in W_4 X P_n. | [
"1",
"13",
"85",
"673",
"5021",
"38237",
"289089",
"2191309",
"16594837",
"125714929",
"952245373",
"7213225309",
"54639088433",
"413885098253",
"3135127983381",
"23748220228801",
"179889887447581",
"1362644200671133",
"10321865130390817"
] | [
"nonn"
] | 15 | 1 | 2 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003764.seq | f2b723e67e312a243f88c00b83a44dea |
A003765 | Number of Hamiltonian cycles in W_4 X P_n. | [
"1",
"10",
"46",
"238",
"1170",
"5882",
"29278",
"146382",
"730434",
"3647994",
"18212046",
"90936494",
"454029874",
"2266968122",
"11318785790",
"56514147406",
"282171551586",
"1408866513082",
"7034386262766",
"35122279177902"
] | [
"nonn"
] | 15 | 1 | 2 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003765.seq | e9aa6f533547f0d460c43c496b64921e |
A003766 | Number of Hamiltonian paths in W_4 X P_n. | [
"6",
"152",
"1608",
"15420",
"127980",
"1003360",
"7432708",
"53294540",
"371397240",
"2537155684",
"17047659916",
"113102692016",
"742597784164",
"4835184613212",
"31267479066856",
"201066698078244",
"1286998671857356",
"8206523391863296"
] | [
"nonn"
] | 14 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003766.seq | fccbde5ca0815db1a4e38101b5f79e88 |
A003767 | Number of spanning trees in (K_4 - e) X P_n. | [
"8",
"1152",
"147000",
"18643968",
"2363741512",
"299675376000",
"37992808932728",
"4816723274883072",
"610663532419269000",
"77419840899743388288",
"9815277065807118267832",
"1244379512520754017408000"
] | [
"nonn"
] | 27 | 1 | 1 | null | null | Frans J. Faase | 2023-08-23T10:18:08 | oeisdata/seq/A003/A003767.seq | c9a7f2cf89e675572f852aad16d14d77 |
A003768 | Number of spanning trees with degrees 1 and 3 in W_4 X P_n. | [
"2",
"16",
"144",
"1216",
"10004",
"82608",
"682636",
"5639688",
"46590712",
"384898384",
"3179752720",
"26268806752",
"217013752672",
"1792809557568",
"14810886647616",
"122356756509056",
"1010822390349184",
"8350678243197184",
"68987220485229824",
"569922160991852032"
] | [
"nonn",
"easy"
] | 49 | 1 | 1 | null | null | Frans J. Faase | 2022-09-08T08:44:32 | oeisdata/seq/A003/A003768.seq | 1ab77051aba5f060dc76977d17a8c5a5 |
A003769 | Number of perfect matchings (or domino tilings) in K_4 X P_n. | [
"3",
"16",
"75",
"361",
"1728",
"8281",
"39675",
"190096",
"910803",
"4363921",
"20908800",
"100180081",
"479991603",
"2299777936",
"11018898075",
"52794712441",
"252954664128",
"1211978608201",
"5806938376875",
"27822713276176",
"133306628004003",
"638710426743841",
"3060245505715200"
] | [
"nonn",
"easy"
] | 23 | 1 | 1 | [
"A003769",
"A005386",
"A099025"
] | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003769.seq | de015e2db154b0803361d06e9b943e2b |
A003770 | Number of 2-factors in K_4 X P_n. | [
"3",
"42",
"474",
"5514",
"63942",
"741786",
"8605014",
"99822138",
"1157982198",
"13433121114",
"155830324182",
"1807702748538",
"20970175374006",
"243263587212186",
"2821968429343638",
"32736119315989434"
] | [
"nonn"
] | 14 | 1 | 1 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003770.seq | 7b2d708becab6984536f7bae6335a22c |
A003771 | Number of Hamiltonian cycles in K_4 X P_n. | [
"3",
"30",
"198",
"1326",
"8886",
"59550",
"399078",
"2674446",
"17922966",
"120111870",
"804937158",
"5394336366",
"36150480246",
"242264688990",
"1623551862438",
"10880333659086",
"72915231888726",
"488645955902910",
"3274691227542918",
"21945546680994606",
"147069444311876406",
"985595016821145630"
] | [
"nonn",
"easy"
] | 23 | 1 | 1 | null | null | Frans J. Faase | 2023-09-10T21:04:47 | oeisdata/seq/A003/A003771.seq | e8ba0696b9906a5abee40342489f5aec |
A003772 | Number of Hamiltonian paths in K_4 X P_n. | [
"12",
"408",
"6648",
"90672",
"1103088",
"12509256",
"135409896",
"1419480288",
"14545113696",
"146607233784",
"1460033574744",
"14411647534224",
"141321405768144",
"1379055205227432",
"13408489143753672",
"130019327919243840",
"1258252792162873152",
"12158637295940721240"
] | [
"nonn",
"easy"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2022-03-02T02:09:35 | oeisdata/seq/A003/A003772.seq | 770f530e3724a92a2d10695d23a674ba |
A003773 | Number of spanning trees in K_4 X P_n. | [
"16",
"3456",
"686000",
"135834624",
"26894628304",
"5325000912000",
"1054323287943536",
"208750686023540736",
"41331581509440922000",
"8183444388183674181504",
"1620280657278860350213424",
"320807386696826179092096000"
] | [
"nonn"
] | 28 | 1 | 1 | null | null | Frans J. Faase | 2023-08-23T09:44:24 | oeisdata/seq/A003/A003773.seq | cfcc08390609f050c145e8c8db96b705 |
A003774 | Number of spanning trees with degrees 1 and 3 in K_4 X P_n. | [
"4",
"48",
"672",
"8496",
"106944",
"1349760",
"17032800",
"214925952",
"2712031104",
"34221651456",
"431824387584",
"5448956749824",
"68757417818112",
"867612411420672",
"10947928532312064",
"138145948088696832"
] | [
"nonn"
] | 19 | 1 | 1 | null | null | Frans J. Faase | 2023-06-25T20:15:27 | oeisdata/seq/A003/A003774.seq | a371af54d50fdf5373f350450fccf1bb |
A003775 | Number of perfect matchings (or domino tilings) in P_5 X P_2n. | [
"1",
"8",
"95",
"1183",
"14824",
"185921",
"2332097",
"29253160",
"366944287",
"4602858719",
"57737128904",
"724240365697",
"9084693297025",
"113956161827912",
"1429438110270431",
"17930520634652959",
"224916047725262248",
"2821291671062267585",
"35389589910135145793",
"443918325373278904936"
] | [
"nonn",
"changed"
] | 86 | 0 | 2 | [
"A003775",
"A099390",
"A189003"
] | null | Frans J. Faase | 2025-04-20T07:56:15 | oeisdata/seq/A003/A003775.seq | a4e5463126f97e55b7a2f1aea66c62ad |
A003776 | Number of 2-factors in P_5 X P_2n. | [
"3",
"54",
"1140",
"24360",
"521064",
"11146656",
"238452456",
"5101047216",
"109123156248",
"2334395822496",
"49938107061384",
"1068291209653392",
"22853211220567416",
"488882861126970624"
] | [
"nonn"
] | 19 | 1 | 1 | null | null | Frans J. Faase | 2023-12-23T13:49:00 | oeisdata/seq/A003/A003776.seq | 9f7d49d06fff653a32b87a1b1bd0cf2f |
A003777 | a(n) = n^3 + n^2 - 1. | [
"1",
"11",
"35",
"79",
"149",
"251",
"391",
"575",
"809",
"1099",
"1451",
"1871",
"2365",
"2939",
"3599",
"4351",
"5201",
"6155",
"7219",
"8399",
"9701",
"11131",
"12695",
"14399",
"16249",
"18251",
"20411",
"22735",
"25229",
"27899",
"30751",
"33791",
"37025",
"40459",
"44099",
"47951",
"52021",
"56315",
"60839",
"65599",
"70601",
"75851"
] | [
"nonn",
"easy"
] | 49 | 1 | 2 | [
"A000578",
"A001107",
"A002411",
"A003777",
"A028294",
"A028295",
"A095794"
] | null | N. J. A. Sloane, Jun 14 1998 | 2024-07-20T19:23:14 | oeisdata/seq/A003/A003777.seq | d5df0f9cdb4ea3e784905452ee219d0b |
A003778 | Number of Hamiltonian paths in P_5 X P_n. | [
"1",
"22",
"132",
"1006",
"4324",
"26996",
"109722",
"602804",
"2434670",
"12287118",
"49852352",
"237425498",
"969300694",
"4434629912",
"18203944458",
"80978858522",
"333840165288",
"1456084764388",
"6021921661718",
"25904211802080"
] | [
"nonn"
] | 26 | 1 | 2 | [
"A003778",
"A332307"
] | null | Frans J. Faase | 2020-02-10T12:33:18 | oeisdata/seq/A003/A003778.seq | 28753882b2ee9b46255df5bd655be94d |
A003779 | Number of spanning trees in P_5 x P_n. | [
"1",
"209",
"30305",
"4140081",
"557568000",
"74795194705",
"10021992194369",
"1342421467113969",
"179796299139278305",
"24080189412483072000",
"3225041354570508955681",
"431926215138756947267505",
"57847355494807961811035009",
"7747424602888405489208931601"
] | [
"nonn",
"easy"
] | 54 | 1 | 2 | [
"A003779",
"A116469",
"A143699",
"A159764",
"A189005",
"A241606"
] | null | Frans J. Faase | 2024-12-19T09:05:43 | oeisdata/seq/A003/A003779.seq | 1dd12aa111b0b9e5721e8e7ffdb4c94d |
A003780 | Number of spanning trees with degrees 1 and 3 in P_5 X P_n. | [
"0",
"0",
"0",
"0",
"0",
"296",
"0",
"0",
"0",
"70420",
"0",
"0",
"0",
"16391166",
"0",
"0",
"0",
"3816021084",
"0",
"0",
"0",
"888375830566",
"0",
"0",
"0",
"206814474641944",
"0",
"0",
"0",
"48146529005876746",
"0",
"0",
"0",
"11208539472498838244",
"0",
"0",
"0",
"2609354391828066201746",
"0",
"0",
"0"
] | [
"nonn"
] | 16 | 1 | 6 | null | null | Frans J. Faase | 2019-01-01T06:31:05 | oeisdata/seq/A003/A003780.seq | cfeabcaa7529eca32588481bd9921783 |
A003781 | Expansion of theta series of {E_7}* lattice in powers of q^(1/2). | [
"1",
"0",
"0",
"56",
"126",
"0",
"0",
"576",
"756",
"0",
"0",
"1512",
"2072",
"0",
"0",
"4032",
"4158",
"0",
"0",
"5544",
"7560",
"0",
"0",
"12096",
"11592",
"0",
"0",
"13664",
"16704",
"0",
"0",
"24192",
"24948",
"0",
"0",
"27216",
"31878",
"0",
"0",
"44352",
"39816",
"0",
"0",
"41832",
"55944",
"0",
"0",
"72576",
"66584",
"0",
"0",
"67536",
"76104",
"0",
"0",
"100800"
] | [
"nonn",
"nice"
] | 25 | 0 | 4 | [
"A003781",
"A004008",
"A005931",
"A030443",
"A038723"
] | null | N. J. A. Sloane | 2025-02-16T08:32:27 | oeisdata/seq/A003/A003781.seq | 9ff62196991013e90658c78a22e82594 |
A003782 | Coefficients of Jacobi Eisenstein series of index 1 and weight 6. | [
"1",
"0",
"0",
"-88",
"-330",
"0",
"0",
"-4224",
"-7524",
"0",
"0",
"-30600",
"-46552",
"0",
"0",
"-130944",
"-169290",
"0",
"0",
"-355080",
"-464904",
"0",
"0",
"-899712",
"-1052040",
"0",
"0",
"-1732192",
"-2099328",
"0",
"0",
"-3421440",
"-3859812",
"0",
"0",
"-5593104"
] | [
"sign"
] | 9 | 0 | 4 | [
"A003782",
"A003783"
] | null | N. J. A. Sloane | 2023-10-22T16:40:46 | oeisdata/seq/A003/A003782.seq | 13e31a9c3d4d3ecc6c4da75cf0b87aee |
A003783 | Coefficients of Jacobi Eisenstein series of index 1 and weight 8. | [
"1",
"0",
"0",
"56",
"366",
"0",
"0",
"14016",
"33156",
"0",
"0",
"260712",
"462392",
"0",
"0",
"1987392",
"2998638",
"0",
"0",
"9090984",
"12799080",
"0",
"0",
"31997376",
"41846952",
"0",
"0",
"89282144",
"113936064",
"0",
"0",
"222509952",
"271647108",
"0",
"0",
"482553936",
"583789398"
] | [
"nonn"
] | 14 | 0 | 4 | [
"A003782",
"A003783"
] | null | N. J. A. Sloane | 2021-12-26T20:48:13 | oeisdata/seq/A003/A003783.seq | 7244d1b9001923cde664c6ebdaa226c4 |
A003784 | Coefficients of Jacobi cusp form of index 1 and weight 10. | [
"0",
"0",
"0",
"1",
"-2",
"0",
"0",
"-16",
"36",
"0",
"0",
"99",
"-272",
"0",
"0",
"-240",
"1056",
"0",
"0",
"-253",
"-1800",
"0",
"0",
"2736",
"-1464",
"0",
"0",
"-4284",
"12544",
"0",
"0",
"-6816",
"-19008",
"0",
"0",
"27270",
"-4554",
"0",
"0",
"-6864",
"39880",
"0",
"0",
"-66013",
"-26928",
"0",
"0",
"44064",
"12544",
"0",
"0"
] | [
"sign"
] | 24 | 0 | 5 | [
"A003784",
"A003785"
] | null | N. J. A. Sloane | 2015-11-29T05:08:43 | oeisdata/seq/A003/A003784.seq | 0fdc2e8ef16a9e3dc3620fe02d295358 |
A003785 | Coefficients of Jacobi cusp form of index 1 and weight 12. | [
"1",
"10",
"0",
"0",
"-88",
"-132",
"0",
"0",
"1275",
"736",
"0",
"0",
"-8040",
"-2880",
"0",
"0",
"24035",
"13080",
"0",
"0",
"-14136",
"-54120",
"0",
"0",
"-128844",
"115456",
"0",
"0",
"389520",
"38016",
"0",
"0",
"-256410",
"-697950",
"0",
"0",
"-806520",
"963160",
"0",
"0",
"1892363",
"938400",
"0",
"0",
"-1227600",
"-2309120",
"0",
"0",
"-813450",
"-2813096",
"0",
"0"
] | [
"sign"
] | 14 | 3 | 2 | [
"A003784",
"A003785"
] | null | N. J. A. Sloane, Mar 15 1996 | 2014-05-20T22:59:16 | oeisdata/seq/A003/A003785.seq | d2547646964f4f506a37ea3df7606f88 |
A003786 | Day-of-month at weekly intervals from Jan 01 of a leap year (a finite sequence with 53 terms). | [
"1",
"8",
"15",
"22",
"29",
"5",
"12",
"19",
"26",
"4",
"11",
"18",
"25",
"1",
"8",
"15",
"22",
"29",
"6",
"13",
"20",
"27",
"3",
"10",
"17",
"24",
"1",
"8",
"15",
"22",
"29",
"5",
"12",
"19",
"26",
"2",
"9",
"16",
"23",
"30",
"7",
"14",
"21",
"28",
"4",
"11",
"18",
"25",
"2",
"9",
"16",
"23",
"30"
] | [
"nonn",
"fini",
"full"
] | 28 | 1 | 2 | [
"A003786",
"A008686"
] | null | N. J. A. Sloane, Olivier Gérard | 2023-07-26T10:23:53 | oeisdata/seq/A003/A003786.seq | c20797750800b1d6499f521cf6a04c2a |
A003787 | Order of universal Chevalley group A_n (3). | [
"1",
"24",
"5616",
"12130560",
"237783237120",
"42064805779476480",
"67034222101339041669120",
"961721214905722855895197286400",
"124190524600592082795473760093457612800",
"144339416867688029764487130056208182629053235200"
] | [
"nonn",
"easy"
] | 27 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003787.seq | e9e74cd0263eb1cd61e2117abd0364cf |
A003788 | Order of universal Chevalley group A_n (4). | [
"1",
"60",
"60480",
"987033600",
"258492255436800",
"1083930404878024704000",
"72736898347485916060188672000",
"78099458182389588115529148326215680000",
"1341733356588640095264385107865053233298800640000"
] | [
"nonn",
"easy"
] | 29 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003788.seq | b7829eec9229d11a319093523e563b9f |
A003789 | Order of universal Chevalley group A_n (5). | [
"1",
"120",
"372000",
"29016000000",
"56653740000000000",
"2766118855500000000000000",
"3376566710423156250000000000000000",
"103044374585338670859375000000000000000000000"
] | [
"nonn",
"easy"
] | 22 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003789.seq | 774af55bac6bffb50f92c451829b5f65 |
A003790 | Order of universal Chevalley group A_n (7). | [
"1",
"336",
"5630688",
"4635182361600",
"187035198320488089600",
"369826556020831611935738265600",
"35832085525362833262818017603275320524800",
"170115000551935077294273059250893063598899496222720000"
] | [
"nonn",
"easy"
] | 22 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003790.seq | 4f5ddb9951aadec3db283be30d293384 |
A003791 | Order of universal Chevalley group A_n (8). | [
"1",
"504",
"16482816",
"34558531338240",
"4638226007491010887680",
"39841906041871272087686291128320",
"21903309038581548352789123727634573903790080"
] | [
"nonn",
"easy"
] | 23 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003791.seq | e2dda2d22f9eba1ab306d6db7ef1cb89 |
A003792 | Order of universal Chevalley group A_n (9). | [
"1",
"720",
"42456960",
"203039372390400",
"78660280796419613491200",
"2468438315722201136962330755072000",
"6274437692242927471137606015213542491815936000",
"1291851049702792234730057308758464452124128263449062932480000"
] | [
"nonn",
"easy"
] | 23 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003792.seq | 62f685e9a1d9727ec381fe33a4acfd5a |
A003793 | Order of (usually) simple Chevalley group A_n (3). | [
"1",
"12",
"5616",
"6065280",
"237783237120",
"21032402889738240",
"67034222101339041669120",
"480860607452861427947598643200",
"124190524600592082795473760093457612800"
] | [
"nonn",
"easy"
] | 21 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003793.seq | 8817824821836f4409e0196d99849fbf |
A003794 | Order of simple Chevalley group A_n (4). | [
"1",
"60",
"20160",
"987033600",
"258492255436800",
"361310134959341568000",
"72736898347485916060188672000",
"78099458182389588115529148326215680000",
"447244452196213365088128369288351077766266880000"
] | [
"nonn",
"easy"
] | 14 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003794.seq | f056674192a3942bd5ed5770c0349c14 |
A003795 | Order of simple Chevalley group A_n (5). | [
"1",
"60",
"372000",
"7254000000",
"56653740000000000",
"1383059427750000000000000",
"3376566710423156250000000000000000",
"25761093646334667714843750000000000000000000",
"78616578542037111790447631835937500000000000000000000000"
] | [
"nonn",
"easy"
] | 14 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003795.seq | 40469f587d6e21e87ea7cdc4ce508627 |
A003796 | Numbers with no 3 adjacent 0's in binary expansion. | [
"0",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"9",
"10",
"11",
"12",
"13",
"14",
"15",
"18",
"19",
"20",
"21",
"22",
"23",
"25",
"26",
"27",
"28",
"29",
"30",
"31",
"36",
"37",
"38",
"39",
"41",
"42",
"43",
"44",
"45",
"46",
"47",
"50",
"51",
"52",
"53",
"54",
"55",
"57",
"58",
"59",
"60",
"61",
"62",
"63",
"73",
"74",
"75",
"76",
"77",
"78",
"79",
"82",
"83",
"84",
"85",
"86",
"87",
"89",
"90",
"91",
"92"
] | [
"nonn",
"base",
"easy"
] | 30 | 1 | 3 | [
"A003726",
"A003754",
"A003796",
"A004742",
"A004743",
"A004744",
"A004745",
"A004746",
"A004779",
"A007088",
"A063037"
] | null | N. J. A. Sloane | 2022-02-13T06:38:21 | oeisdata/seq/A003/A003796.seq | 514648b115350623498e3379af2aad1c |
A003797 | Order of simple Chevalley group A_n (7). | [
"1",
"168",
"1876896",
"2317591180800",
"187035198320488089600",
"61637759336805268655956377600",
"35832085525362833262818017603275320524800",
"85057500275967538647136529625446531799449748111360000"
] | [
"nonn",
"easy"
] | 14 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003797.seq | 30e99cc87a6f49f1f869bafbf07b0a1b |
A003798 | Order of simple Chevalley group A_n (8). | [
"1",
"504",
"16482816",
"34558531338240",
"4638226007491010887680",
"39841906041871272087686291128320",
"3129044148368792621827017675376367700541440",
"770654129255561941216424578913668563609374922170066534400"
] | [
"nonn",
"easy"
] | 14 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003798.seq | e89411104c057e5c60d99125c0d9d759 |
A003799 | Order of simple Chevalley group A_n (9). | [
"1",
"360",
"42456960",
"50759843097600",
"78660280796419613491200",
"1234219157861100568481165377536000",
"6274437692242927471137606015213542491815936000",
"161481381212849029341257163594808056515516032931132866560000"
] | [
"nonn",
"easy"
] | 15 | 0 | 2 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003799.seq | d011075094b7fc6692770faac50ed54f |
A003800 | Order of universal Chevalley group A_2 (q), q = prime power. | [
"168",
"5616",
"60480",
"372000",
"5630688",
"16482816",
"42456960",
"212427600",
"810534816",
"4277145600",
"6950204928",
"16934047920",
"78156525216",
"152334000000",
"282027786768",
"499631102880",
"851974934400",
"1098404364288"
] | [
"nonn",
"easy"
] | 16 | 1 | 1 | null | null | N. J. A. Sloane | 2024-06-14T22:31:08 | oeisdata/seq/A003/A003800.seq | 58d1971772853e27b4bf3ba038bf4c2a |
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