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A287888
Unrooted unlabeled connected Ptolemaic graphs on n nodes.
0
1, 1, 2, 5, 14, 47, 170, 676, 2834, 12471, 56675, 264906, 1264851, 6150187, 30357300, 151798497, 767573729, 3919462385
OFFSET
1,3
LINKS
Maryam Bahrani and Jérémie Lumbroso, Enumerations, Forbidden Subgraph Characterizations, and the Split-Decomposition, arXiv:1608.01465 [math.CO], 2016.
CROSSREFS
Sequence in context: A148338 A149903 A149904 * A115276 A343664 A327702
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 21 2017
EXTENSIONS
Definition corrected (connected only) by Falk Hüffner, Jul 24 2019
STATUS
approved