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 A065291 #3 May 01 2014 02:42:47 %S A065291 1,1,1,2,5,2,2,4,10,4,12,4,4,4,4,8,20,8,22,8,24,8,26,8,8,8,8,8,8,8,8, %T A065291 16,40,16,42,16,44,16,46,16,48,16,50,16,52,16,54,16,16,16,16,16,16,16, %U A065291 16,16,16,16,16,16,16,16,16,32,80,32,82,32,84,32,86,32,88,32,90,32,92 %N A065291 The siteswap sequence (the deltas p[i]-i, i in ]-inf,+inf[, folded from Z to N, mapping 0->1, 1->2, -1->3, 2->4, -2->5, etc.) for A065290. %Y A065291 The bisection of even terms (the positive half of Z) is given by A053644 and the bisection of odd terms (the nonpositive half of Z) is given by A065292. %K A065291 nonn %O A065291 1,4 %A A065291 _Antti Karttunen_, Oct 28 2001