A243551 Number of simple connected graphs with n nodes that have no subgraph isomorphic to the bowtie graph or K_4.

1, 1, 2, 5, 14, 56, 256, 1656, 13952, 163878, 2646642, 59088801

Offset: 1

Author

Travis Hoppe and Anna Petrone, Jun 06 2014

Keywords

• nonn
• more

Comments

K_4 is the complete graph on four vertices.

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. A242792 (bowtie free graphs), A079574 (K_4 free graphs).

Extensions

a(11)-a(12) added using tinygraph by Falk Hüffner, Sep 23 2020