A243794 Number of simple connected graphs with n nodes that are planar and have no subgraph isomorphic to the open-bowtie graph.

1, 1, 2, 6, 11, 33, 94, 370, 1627, 8895, 56416, 414456, 3382661

Offset

1,3

Links

Table of n, a(n) for n=1..13.

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 9766535.

Crossrefs

Cf. A242791 (open-bowtie free graphs), A003094 (planar graphs).

Sequence in context: A189319 A268501 A026564 * A318199 A242791 A156065

Adjacent sequences: A243791 A243792 A243793 * A243795 A243796 A243797

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 16 2014

Extensions

a(11)-a(13) added using tinygraph by Falk Hüffner, May 12 2019

Status

approved