A129046 Number of n-node triangulations of the Klein bottle N_2 in which every node has degree >= 3.

0, 6, 187, 4462, 86968, 1448516, 21535942, 294625589, 3787236314, 46411139226, 547841825257

Offset

7,2

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=7..17.

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

Crossrefs

Sequence in context: A272467 A015004 A324094 * A222016 A059491 A024279

Adjacent sequences: A129043 A129044 A129045 * A129047 A129048 A129049

Keyword

nonn

Author

N. J. A. Sloane, May 13 2007

Status

approved