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 A290765 #13 Feb 16 2025 08:33:50 %S A290765 1,4,58,16790,10976541,17934472404,115038147988542,3086974276257455630 %N A290765 Number of (non-null) connected induced subgraphs in the n X n knight graph. %H A290765 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedGraph.html">Connected Graph</a> %H A290765 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KnightGraph.html">Knight Graph</a> %H A290765 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Vertex-InducedSubgraph.html">Vertex-Induced Subgraph</a> %K A290765 nonn,more %O A290765 1,2 %A A290765 _Eric W. Weisstein_, Aug 10 2017 %E A290765 a(6)-a(8) from _Andrew Howroyd_, Aug 15 2017