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 A346143 #14 Feb 16 2025 08:34:02 %S A346143 1,3,7,51,214,2357,25611,551596 %N A346143 Number of maximal irredundant sets in the n-triangular grid graph. %H A346143 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MaximalIrredundantSet.html">Maximal Irredundant Set</a> %H A346143 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TriangularGridGraph.html">Triangular Grid Graph</a> %Y A346143 Cf. A347724. %K A346143 nonn,more %O A346143 0,2 %A A346143 _Eric W. Weisstein_, Sep 16 2021 %E A346143 a(7) from _Andrew Howroyd_, Jan 19 2022