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 A289883 #12 Feb 16 2025 08:33:49 %S A289883 1,3,3,11,23,73,211,651,2371,7401,30151,107713,456409,1888753,8148451, %T A289883 37754791,170459451,842310755,4096595827,20984546901 %N A289883 Number of maximal independent vertex sets in the n-triangular honeycomb queen graph. %H A289883 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/MaximalIndependentVertexSet.html">Maximal Independent Vertex Set</a> %Y A289883 Cf. A289709, A289893. %K A289883 nonn,more %O A289883 1,2 %A A289883 _Eric W. Weisstein_, Jul 14 2017 %E A289883 a(14)-a(20) from _Andrew Howroyd_, Dec 03 2021