%I #15 Apr 05 2017 05:13:51
%S 0,0,0,0,0,0,1,6,110,4125,389583
%N Number of connected graphs on n nodes with chromatic number 7.
%C A diagonal of triangle in A126736.
%H Travis Hoppe and Anna Petrone, <a href="https://github.com/thoppe/Encyclopedia-of-Finite-Graphs">Encyclopedia of Finite Graphs</a>
%H T. Hoppe and A. Petrone, <a href="http://arxiv.org/abs/1408.3644">Integer sequence discovery from small graphs</a>, arXiv preprint arXiv:1408.3644 [math.CO], 2014.
%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ChromaticNumber.html">Chromatic Number</a>
%K nonn,hard,more
%O 1,8
%A _Travis Hoppe_ and _Anna Petrone_, Apr 27 2014
%E a(11) added using tinygraph by _Falk Hüffner_, Apr 04 2017