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 A289204 #8 Feb 16 2025 08:33:48 %S A289204 0,0,56,14980,19005336,278982789260 %N A289204 Number of (undirected) paths in the n X n knight graph. %H A289204 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphPath.html">Graph Path</a> %H A289204 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KnightGraph.html">Knight Graph</a> %Y A289204 Cf. A234623, A212715, A165134, A001230. %K A289204 nonn,more %O A289204 1,3 %A A289204 _Eric W. Weisstein_, Jun 28 2017 %E A289204 a(5)-a(6) from _Andrew Howroyd_, Jul 01 2017