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A243557 Number of simple connected graphs with n nodes that are non-integral and have no subgraph isomorphic to bull graph. 0
0, 0, 1, 4, 8, 23, 78, 337, 1690, 11418 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

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.

CROSSREFS

Cf. A244427 (no-bull subgraphs), A241842 (non-integral graphs).

Sequence in context: A274521 A026596 A181688 * A316687 A083504 A277291

Adjacent sequences:  A243554 A243555 A243556 * A243558 A243559 A243560

KEYWORD

nonn,more

AUTHOR

Travis Hoppe and Anna Petrone, Jun 06 2014

STATUS

approved

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Last modified June 15 16:13 EDT 2019. Contains 324142 sequences. (Running on oeis4.)