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URL: https://oeis.org/A243248

⇱ A243248 - OEIS

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A243248
Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a bull-graph.
0
0, 0, 0, 0, 12, 86, 773, 10777, 259390, 11705139
OFFSET
1,5
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 [math.CO], 2014
Eric Weisstein's World of Mathematics, Bull Graph
FORMULA
a(n) = A001349(n) - A244427(n).
CROSSREFS
Cf. A244427 (no bull subgraphs).
Sequence in context: A283119 A383841 A091119 * A046023 A369421 A383137
KEYWORD
nonn,more
AUTHOR
Travis Hoppe and Anna Petrone, Jun 01 2014
STATUS
approved