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 A207411 #9 Mar 31 2012 10:33:03 %S A207411 0,0,0,0,0,1,5,38,330,3435,41823,614757,10678281,218040550,5180904503 %N A207411 Number of connected triangle-free graphs on n nodes with edge chromatic number 5. %Y A207411 Cf. A207410. %K A207411 nonn,more %O A207411 1,7 %A A207411 _Michael Sollami_, Feb 17 2012