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A006395 Number of connected planar maps with n nodes.
(Formerly M2494)
0
1, 1, 3, 5, 14, 42, 150, 624 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Walsh, T. R. S.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.

CROSSREFS

Sequence in context: A192478 A198785 A052974 * A078718 A081393 A129326

Adjacent sequences:  A006392 A006393 A006394 * A006396 A006397 A006398

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 16 10:28 EST 2012. Contains 205904 sequences.