A129045 - OEIS

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A129045

Number of n-node triangulations of the projective plane N_1 in which every node has degree >= 5.

0, 1, 0, 1, 1, 3, 7, 16, 44, 134, 433, 1483, 5196, 18795, 68845 (list; graph; refs; listen; history; internal format)

	OFFSET	`5,6`
	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: A144977 A058300 A000674 * A005312 A143817 A000963` `Adjacent sequences: A129042 A129043 A129044 * A129046 A129047 A129048`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 13 2007`

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Last modified February 17 18:01 EST 2012. Contains 206061 sequences.