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 A332406 #7 Feb 01 2025 23:17:40 %S A332406 0,1,2,6,19,96,670,8191,183149,7888271 %N A332406 Number of simple graphs on n unlabeled nodes with total domination number 2. %H A332406 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TotalDominationNumber.html">Total Domination Number</a>. %Y A332406 Column k=2 of A332400. %K A332406 nonn,more %O A332406 1,3 %A A332406 _Andrew Howroyd_, Feb 13 2020