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 A297559 #5 Feb 16 2025 08:33:52 %S A297559 1,1,5,8,592,3552,6173856,279806400 %N A297559 Number of maximum matchings in the n X n black bishop graph. %H A297559 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/BlackBishopGraph.html">Black Bishop Graph</a> %H A297559 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Matching.html">Matching</a> %H A297559 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MaximumIndependentEdgeSet.html">Maximum Independent Edge Set</a> %K A297559 nonn,more %O A297559 1,3 %A A297559 _Eric W. Weisstein_, Dec 31 2017