A287887 Rooted unlabeled Ptolemaic graphs on n nodes.

1, 1, 3, 10, 40, 168, 764, 3589, 17460, 86858, 440507, 2267491, 11819232, 62250491, 330794053, 1771283115, 9547905381

Offset

1,3

Links

Table of n, a(n) for n=1..17.

Maryam Bahrani and Jérémie Lumbroso, Enumerations, Forbidden Subgraph Characterizations, and the Split-Decomposition, arXiv:1608.01465 [math.CO], 2016.

Crossrefs

Sequence in context: A254535 A093639 A089005 * A088300 A151074 A151075

Adjacent sequences: A287884 A287885 A287886 * A287888 A287889 A287890

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 21 2017

Status

approved