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 A286684 #6 Feb 16 2025 08:33:45 %S A286684 0,0,1,2,7,43,372,6132,176797,9302828 %N A286684 Number of pancyclic graphs on n nodes. %H A286684 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PancyclicGraph.html">Pancyclic Graph</a> %K A286684 nonn,more %O A286684 1,4 %A A286684 _Eric W. Weisstein_, May 12 2017