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Search: id:A001508
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A001508 Number of simple quadrangulations.
(Formerly M4918 N2111)
+0
2
0, 0, 0, 0, 13, 252, 3740, 51300, 685419, 9095856, 120872850, 1614234960, 21697730849 (list; graph; listen)
OFFSET

1,5

REFERENCES

R. C. Mullin and P. J. Schellenberg, The enumeration of c-nets via triangulations, J. Combin. Theory, 4 (1968), 259-276.

CROSSREFS

Sequence in context: A053100 A126422 A106738 this_sequence A034242 A142811 A034833

Adjacent sequences: A001505 A001506 A001507 this_sequence A001509 A001510 A001511

KEYWORD

nonn

AUTHOR

njas

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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