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 A076318 #10 Feb 16 2025 08:32:47 %S A076318 1,2,4,11,34,156,1043,12338,274541,12000742,1018595454 %N A076318 Number of 6-colorable (i.e., chromatic number <= 6) simple graphs on n nodes. %H A076318 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/n-ColorableGraph.html">n-Colorable Graph</a> %F A076318 a(n) = A076317(n) + A076282(n). - _Andrew Howroyd_, Dec 02 2018 %Y A076318 Cf. A033995, A076282, A076315, A076316, A076317, A076319, A076320, A076321. %K A076318 nonn,more %O A076318 1,2 %A A076318 _Eric W. Weisstein_, Oct 06 2002 %E A076318 a(10)-a(11) from _Andrew Howroyd_, Dec 02 2018