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 A303003 #20 Feb 16 2025 08:33:53 %S A303003 2,2,2,3,4,4,5,5,6,7,7,8,9,9,10,10,10,11,12 %N A303003 Total domination number of the n X n queen graph. %H A303003 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/QueenGraph.html">Queen Graph</a> %H A303003 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TotalDominationNumber.html">Total Domination Number</a> %H A303003 Eric W. Weisstein, <a href="/A303003/a303003.png">Example minimum total domination configurations for n X n queen graphs</a> %K A303003 nonn,more,hard %O A303003 2,1 %A A303003 _Eric W. Weisstein_, Apr 17 2018 %E A303003 a(17)-a(20) from _Eric W. Weisstein_, Sep 10-11 2021