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 A307934 #7 Feb 16 2025 08:33:55 %S A307934 0,1,4,96,25376,32132352,1295557991168,229067542255136768, %T A307934 2627612220112334649458688 %N A307934 Number of (undirected) Hamiltonian paths in the n X n black bishop graph. %H A307934 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BlackBishopGraph.html">Black Bishop Graph</a> %H A307934 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HamiltonianPath.html">Hamiltonian Path</a> %K A307934 nonn,hard,more %O A307934 1,3 %A A307934 _Eric W. Weisstein_, May 06 2019