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A243246 Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a C_5, where C_5 is the cycle graph on five vertices. 0
0, 0, 0, 0, 8, 68, 709, 10540, 258623, 11704072 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

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 [math.CO], 2014

Eric Weisstein's World of Mathematics, Cycle Graph

FORMULA

a(n) = A001349(n) - A241784(n).

CROSSREFS

Sequence in context: A054915 A073555 A167859 * A113357 A030992 A091590

Adjacent sequences:  A243243 A243244 A243245 * A243247 A243248 A243249

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 01 2014

STATUS

approved

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Last modified May 26 18:08 EDT 2020. Contains 334630 sequences. (Running on oeis4.)