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 A207412 #10 Mar 31 2012 10:33:03 %S A207412 0,0,0,0,0,0,1,6,57,659,10236,204927,5231080,166394885,6459372691 %N A207412 Number of connected triangle-free graphs on n nodes with edge chromatic number 6. %Y A207412 Cf. A207410, A207408. %K A207412 nonn,more %O A207412 1,8 %A A207412 _Michael Sollami_, Feb 17 2012