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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

K_4 is the complete graph on four vertices.

LINKS

Table of n, a(n) for n=1..10.

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

CROSSREFS

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

Sequence in context: A047136 A047042 A174795 * A110043 A006847 A008286

Adjacent sequences:  A243548 A243549 A243550 * A243552 A243553 A243554

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 06 2014

STATUS

approved

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Last modified April 26 09:52 EDT 2019. Contains 322472 sequences. (Running on oeis4.)