; A008347 a(n) = Sum_{i=0..n-1} (-1)^i * prime(n-i). | |
; Coded manually 2021-03-28 by Simon Strandgaard, https://github.com/neoneye | |
; 0,2,1,4,3,8,5,12,7,16,13,18,19,22,21,26,27,32,29,38,33,40,39,44,45,52,49,54,53,56,57,70,61,76,63,86,65,92,71,96,77,102,79,112,81,116,83,128,95,132,97,136,103,138,113,144,119,150,121,156,125,158,135,172,139,174,143 | |
mov 1 ; initial sign | ,|
lpb | |
sub 1 | ,|
mov | ,|
seq 40 ; prime(n-i) | ,|
mul by (-1)^i | , ; multiply|
add , ; add to sum | |
mul -1 ; alternate betweeen -1 and +1 | ,|
lpe | |
mov | ,|