A129060 - OEIS

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A129060

Number of n-node triangulations of the nonorientable surface N_5 in which every node has degree >= 6.

0, 2, 5839, 1117750, 41548569 (list; graph; refs; listen; history; internal format)

	OFFSET	`8,2`
	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: A078933 A064029 A057645 * A190127 A099690 A196750` `Adjacent sequences: A129057 A129058 A129059 * A129061 A129062 A129063`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 13 2007`

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Last modified February 17 13:28 EST 2012. Contains 206031 sequences.