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A129037
Number of n-node triangulations of the double torus S_2 in which every node has degree >= 6.
0
0, 298, 7044, 64820, 356293, 1429448, 4644258
OFFSET
9,2
REFERENCES
M. Jungerman and G. Ringel, Minimal triangulations on orientable surfaces, Acta Math. 145 (1980), 121-154.
CROSSREFS
Sequence in context: A234665 A234659 A186126 * A249296 A245956 A235229
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 12 2007
STATUS
approved