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 A291098 #13 Feb 16 2025 08:33:50 %S A291098 1,4,12,266,4087,216185,13731833,2373155507,746775944641 %N A291098 Number of maximal irredundant sets in the n X n king graph. %H A291098 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/KingGraph.html">King Graph</a> %H A291098 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MaximalIrredundantSet.html">Maximal Irredundant Set</a> %K A291098 nonn,more %O A291098 1,2 %A A291098 _Eric W. Weisstein_, Aug 17 2017 %E A291098 a(5) from _Eric W. Weisstein_, Sep 08 2021 %E A291098 a(6)-a(9) from _Christian Sievers_, Nov 22 2023