A243549 Number of simple connected graphs with n nodes that are non-integral and have no subgraph isomorphic to the bowtie graph.

0, 0, 1, 4, 13, 56, 272, 1761, 14835, 174092

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.

Crossrefs

Cf. A242792 (bowtie-free graphs), A241842 (non-integral graphs).

Sequence in context: A121070 A163070 A239981 * A344418 A159595 A009300

Adjacent sequences: A243546 A243547 A243548 * A243550 A243551 A243552

Keyword

nonn,more

Author

Travis Hoppe and Anna Petrone, Jun 06 2014

Status

approved