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A129031
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Number of n-node triangulations of the torus S_1 in which every node has degree >= 4.
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0
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0, 1, 6, 75, 887, 9732, 97106, 897351, 7824619, 65344834, 528138249, 4162485476
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OFFSET
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6,3
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REFERENCES
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M. Jungerman and G. Ringel, Minimal triangulations on orientable surfaces, Acta Math. 145 (1980), 121-154.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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