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A129032
Number of n-node triangulations of the torus S_1 in which every node has degree >= 5.
0
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.
CROSSREFS
Sequence in context: A265975 A306610 A059153 * A270686 A272253 A300581
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 12 2007
STATUS
approved