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 A307919 #9 Feb 16 2025 08:33:55 %S A307919 4536,725408,276182500,272445788808 %N A307919 Number of (undirected) paths in the n X n torus grid graph. %H A307919 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphPath.html">Graph Path</a> %H A307919 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TorusGridGraph.html">Torus Grid Graph</a> %K A307919 nonn,more,bref %O A307919 3,1 %A A307919 _Eric W. Weisstein_, May 06 2019 %E A307919 a(6) from _Eric W. Weisstein_, May 08 2019