A287885 Rooted labeled Ptolemaic graphs on n nodes.

1, 2, 12, 140, 2405, 54252, 1512539, 50168456, 1928240622, 84240029730, 4121792058791, 223248397559376

Offset

1,2

Links

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

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

Crossrefs

Sequence in context: A330655 A093543 A367636 * A091144 A275829 A351731

Adjacent sequences: A287882 A287883 A287884 * A287886 A287887 A287888

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 21 2017

Status

approved