A243795 Number of simple connected graphs with n nodes that have no subgraph isomorphic to the open-bowtie graph or the bull graph.

1, 1, 2, 6, 7, 22, 65, 285, 1442, 10106, 92277, 1153548, 19504515

Offset: 1

Author

Travis Hoppe and Anna Petrone, Jun 16 2014

Keywords

• nonn
• more

Links

• Travis Hoppe and Anna Petrone, Encyclopedia of Finite Graphs
• T. Hoppe and A. Petrone, Integer sequence discovery from small graphs, arXiv preprint arXiv:1408.3644, 2014
• F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 29e68fa.

Crossrefs

Cf. A242791 (no open-bowtie graphs), A244427 (no bull subgraphs).

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, Sep 23 2020