A243797 Number of graphs with n nodes that are chordal and do not have a bowtie as a subgraph.

1, 1, 2, 5, 10, 27, 70, 206, 613, 1942, 6259, 20840, 70528, 243276, 850281

Offset

1,3

Links

Table of n, a(n) for n=1..15.

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.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version e8699da

Crossrefs

Cf. A048192 (chordal graphs), A242792 (bowtie free graphs).

Sequence in context: A221843 A368834 A032099 * A120896 A074801 A394252

Adjacent sequences: A243794 A243795 A243796 * A243798 A243799 A243800

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 27 2014

Extensions

a(11)-a(15) added using tinygraph by Falk Hüffner, Jan 17 2016

Status

approved