A243250 Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a diamond graph.

0, 0, 0, 2, 10, 73, 688, 10150, 253396, 11629559

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

Eric Weisstein's World of Mathematics, Diamond Graph

Formula

a(n) = A001349(n) - A242790(n).

Crossrefs

Sequence in context: A231039 A224799 A275550 * A088189 A228609 A001395

Adjacent sequences: A243247 A243248 A243249 * A243251 A243252 A243253

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 01 2014

Status

approved