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Search: id:A006443
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| A006443 |
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Number of connected planar maps with n edges.
(Formerly M1277)
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+0
2
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| 2, 4, 14, 47, 184, 761, 3314, 14997, 69886, 333884, 1626998, 8067786, 40580084, 206734083, 1064666724, 5536480877, 29036188788, 153450351924, 816503772830
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Wormald, Nicholas C. Counting unrooted planar maps. Discrete Math. 36 (1981), no. 2, 205-225.
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CROSSREFS
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Sequence in context: A005437 A062868 A054936 this_sequence A152103 A102879 A032312
Adjacent sequences: A006440 A006441 A006442 this_sequence A006444 A006445 A006446
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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