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 A205568 #11 Feb 16 2025 08:33:16 %S A205568 0,0,0,0,0,0,0,0,1,9,222 %N A205568 Number of 9-chromatic (i.e., chromatic number equals 9) simple graphs on n nodes. %H A205568 Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a> %H A205568 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/n-ChromaticGraph.html">n-Chromatic Graph</a> %Y A205568 Column k=9 of A084268. %Y A205568 Cf. A076278, A076279, A076281, A076282. %K A205568 nonn,more %O A205568 1,10 %A A205568 _Michael Sollami_, Jan 28 2012