id:A129043 - OEIS Search Results

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Number of n-node triangulations of the projective plane N_1 in which every node has degree >= 3.

+0
1

0, 1, 3, 16, 134, 1210, 11719, 114478, 1108826, 10606795, 100352404, 940956644, 8762227629, 81168427279, 748953936818 (list; graph; listen)

	OFFSET	`5,3`
	REFERENCES	`G. Ringel, Wie man die geschlossenen nichtorientierbaren Flaechen in moeglichst wenig Dreiecke zerlegen kann, Math. Ann. 130 (1955), 317-326.`
	LINKS	`Thom Sulanke, Generating triangulations of surfaces (surftri), (also subpages).`
	CROSSREFS	`Sequence in context: A023998 A048802 A119392 this_sequence A135746 A006057 A002719` `Adjacent sequences: A129040 A129041 A129042 this_sequence A129044 A129045 A129046`
	KEYWORD	`nonn`
	AUTHOR	`njas, May 12 2007`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.