A129032 Number of n-node triangulations of the torus S_1 in which every node has degree >= 5.

0, 1, 4, 24, 112, 511, 2285, 9854, 41874, 175130, 725608, 2979238

Offset

6,3

References

M. Jungerman and G. Ringel, Minimal triangulations on orientable surfaces, Acta Math. 145 (1980), 121-154.

Links

Table of n, a(n) for n=6..17.

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

Crossrefs

Sequence in context: A265975 A306610 A059153 * A270686 A272253 A300581

Adjacent sequences: A129029 A129030 A129031 * A129033 A129034 A129035

Keyword

nonn

Author

N. J. A. Sloane, May 12 2007

Status

approved