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 A084283 #11 Feb 16 2025 08:32:49 %S A084283 1,1,4,37,667,21886,1262719,125387767,21009091072,5809425721381, %T A084283 2596693747042999,1844571022305443422 %N A084283 Number of connected labeled 3-colorable (i.e., chromatic number <= 3) graphs on n nodes. %H A084283 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/n-ColorableGraph.html">n-Colorable Graph</a> %F A084283 Logarithmic transform of A084279. - _Andrew Howroyd_, Dec 02 2018 %Y A084283 Cf. A001832, A084273, A084279, A084283, A084284, A084285, A084286. %K A084283 nonn,more %O A084283 1,3 %A A084283 _Eric W. Weisstein_, May 25 2003 %E A084283 a(7)-a(12) from _Andrew Howroyd_, Dec 02 2018