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 A234629 #10 Feb 16 2025 08:33:21 %S A234629 0,1,63,15703,58520309,4160751709140,6537540397103648498 %N A234629 Numbers of undirected cycles in the n-triangular graph. %H A234629 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GraphCycle.html">Graph Cycle</a> %H A234629 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TriangularGraph.html">Triangular Graph</a> %K A234629 nonn,more %O A234629 2,3 %A A234629 _Eric W. Weisstein_, Dec 28 2013 %E A234629 a(7)-a(8) from _Eric W. Weisstein_, Apr 09 2014