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%I #14 Dec 01 2015 11:58:10
%S 0,0,0,0,12,86,773,10777,259390,11705139
%N Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a bull-graph.
%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 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/BullGraph.html">Bull Graph</a>
%F a(n) = A001349(n) - A244427(n).
%Y Cf. A244427 (no bull subgraphs).
%K nonn,more
%O 1,5
%A _Travis Hoppe_ and _Anna Petrone_, Jun 01 2014
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