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 A298124 #7 Feb 16 2025 08:33:53 %S A298124 397,37293,12746301,15822272735,71947571249709,1200506645405599669 %N A298124 Number of connected induced subgraphs in the n X n torus grid graph. %H A298124 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ConnectedGraph.html">Connected Graph</a> %H A298124 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TorusGridGraph.html">Torus Grid Graph</a> %H A298124 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Vertex-InducedSubgraph.html">Vertex-Induced Subgraph</a> %Y A298124 Cf. A298106. %K A298124 nonn,more %O A298124 3,1 %A A298124 _Eric W. Weisstein_, Jan 13 2018 %E A298124 a(6)-a(8) from _Andrew Howroyd_, Jan 13 2018