%I #16 May 09 2019 17:51:35
%S 1,1,2,6,9,25,76,302,1360,7606,49313,368568,3046968
%N Number of simple connected graphs with n nodes that are planar and have no subgraph isomorphic to 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, 2014
%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 9766535.
%Y Cf. A244427 (no bull subgraphs), A003094 (planar graphs).
%K nonn,more
%O 1,3
%A _Travis Hoppe_ and _Anna Petrone_, Jun 06 2014
%E a(11)-a(13) added using tinygraph by _Falk Hüffner_, May 09 2019