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 A295178 #5 Feb 16 2025 08:33:52 %S A295178 1,4,-1,78,1306725 %N A295178 Chromatic invariant of the n X n knight graph. %H A295178 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ChromaticInvariant.html">Chromatic Invariant</a> %H A295178 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KnightGraph.html">Knight Graph</a> %K A295178 sign,more %O A295178 1,2 %A A295178 _Eric W. Weisstein_, Nov 16 2017