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A243551 Number of simple connected graphs with n nodes that have no subgraph isomorphic to the bowtie graph or K_4. 0
1, 1, 2, 5, 14, 56, 256, 1656, 13952, 163878, 2646642, 59088801 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
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).
Sequence in context: A047136 A047042 A174795 * A110043 A006847 A008286
KEYWORD
nonn,more
AUTHOR
Travis Hoppe and Anna Petrone, Jun 06 2014
EXTENSIONS
a(11)-a(12) added using tinygraph by Falk Hüffner, Sep 23 2020
STATUS
approved

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)