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A006443 Number of connected planar maps with n edges.
(Formerly M1277)
1
2, 4, 14, 47, 184, 761, 3314, 14997, 69886, 333884, 1626998, 8067786, 40580084, 206734083, 1064666724, 5536480877, 29036188788, 153450351924, 816503772830 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

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

LINKS

Wormald, Nicholas C. Counting unrooted planar maps, Discrete Math. 36 (1981), no. 2, 205-225.

CROSSREFS

Sequence in context: A005437 A062868 A054936 * A152103 A102879 A032312

Adjacent sequences:  A006440 A006441 A006442 * A006444 A006445 A006446

KEYWORD

nonn,nice

AUTHOR

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

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.