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 A234636 #9 Feb 16 2025 08:33:21 %S A234636 0,3,106,17367,24601058,638520866656,169298265484672524, %T A234636 1292856744880357036357430 %N A234636 Numbers of undirected cycles in the n X n bishop graph. %H A234636 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BishopGraph.html">Bishop Graph</a> %H A234636 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a> %F A234636 a(n) = A234603(n) + A234630(n). %K A234636 nonn %O A234636 2,2 %A A234636 _Eric W. Weisstein_, Dec 28 2013 %E A234636 a(7) corrected and a(8)-a(9) from _Andrew Howroyd_, May 08 2017