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 A234630 #14 Feb 16 2025 08:33:21 %S A234630 1,53,4943,12300529,134480655082,84649132742336262, %T A234630 212615053823090089357638 %N A234630 Numbers of undirected cycles in the n X n white bishop graph. %H A234630 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/WhiteBishopGraph.html">White Bishop Graph</a> %H A234630 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a> %Y A234630 Cf. A234603, A234636, A234624, A282890, A234637. %K A234630 nonn,hard,more %O A234630 3,2 %A A234630 _Eric W. Weisstein_, Dec 28 2013 %E A234630 a(7) from _Eric W. Weisstein_, Jan 04 2014 %E A234630 a(3) prepended and a(8)-a(9) from _Andrew Howroyd_, May 08 2017