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 A126752 #12 Jul 22 2015 04:07:28 %S A126752 0,0,0,1,2,17,189,3627,118114,6530233,596566067 %N A126752 Number of biconnected graphs on n nodes with chromatic number 4. %C A126752 It is possible that the definition should say "connected" rather than "biconnected". Should be rechecked! - _Max Alekseyev_ and _Brendan McKay_, Jun 17 2008 %H A126752 Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a> %Y A126752 A diagonal of triangle in A126749. %K A126752 nonn,more %O A126752 1,5 %A A126752 _N. J. A. Sloane_, Feb 18 2007 %E A126752 a(11) from _Michael Sollami_, Feb 18 2012