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A129049 Number of n-node triangulations of the nonorientable surface N_3 in which every node has degree >= 3. 0
0, 133, 11784, 530278, 16306649, 392973078, 8001174073, 144075560093 (list; graph; refs; listen; history; text; 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

Table of n, a(n) for n=8..15.

Thom Sulanke, Generating triangulations of surfaces (surftri), (also subpages).

CROSSREFS

Sequence in context: A254684 A133240 A129050 * A281496 A015264 A055579

Adjacent sequences: A129046 A129047 A129048 * A129050 A129051 A129052

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 13 2007

STATUS

approved

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Last modified November 28 05:56 EST 2022. Contains 358407 sequences. (Running on oeis4.)