A079567 Number of unlabeled, connected graphs on n vertices which have no induced subgraph isomorphic to a P5, P5-bar or C5 and are not bipartite nor cobipartite and are primes.

0, 0, 0, 0, 1, 4, 18, 85, 455, 2870, 21280, 192548

Offset

1,6

Comments

P5 = path on five vertices. P5-bar = complement of P5. C5 = cycle on five vertices. Cobipartite means having a bipartite complement. G prime if G has no module (homogeneous set.)

Links

Table of n, a(n) for n=1..12.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties.

Crossrefs

Sequence in context: A046885 A247637 A055834 * A030278 A318217 A341248

Adjacent sequences: A079564 A079565 A079566 * A079568 A079569 A079570

Keyword

more,nonn

Author

Jim Nastos, Jan 24 2003

Extensions

a(10)-a(12) added using tinygraph by Falk Hüffner, Jan 23 2016

Status

approved