This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A110854 #14 Oct 11 2020 13:15:18 %S A110854 1,0,0,4,0,-4,4,-4,2,2,0,-2,0,0,0,-2,0,4,0,-4,0,0,10,-10,4,4,-4,-4,2, %T A110854 6,-6,0,2,-4,4,0,-2,4,0,-6,0,2,4,-6,10,-8,0,8,6,-8,-4,0,0,-4,4,-4,8, %U A110854 -6,2,6,-6,4,0,-4,-2,2,2,6,-2,-2,-6,6,-6,0,0,0,0,6,-6,2,-2,2,0,-2,-2,0,8,0 %N A110854 A155750(n)-A155067(n) = prime(2n+2)-prime(2n+1)-prime(2n)+prime(2n-1). %C A110854 Do the absolute values cover A004275? %H A110854 Harvey P. Dale, <a href="/A110854/b110854.txt">Table of n, a(n) for n = 1..1000</a> %t A110854 #[[4]]-#[[3]]-#[[2]]+#[[1]]&/@Partition[Prime[Range[200]],4,2] (* _Harvey P. Dale_, Oct 11 2020 *) %K A110854 sign,easy %O A110854 1,4 %A A110854 _Paul Curtz_, Aug 25 2008 %E A110854 Edited by _R. J. Mathar_, Feb 27 2009