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A005645
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Number of 3-connected planar maps with n edges.
(Formerly M0599)
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0
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1, 0, 1, 2, 3, 4, 15, 32, 89, 266, 797, 2496, 8012, 26028, 85888, 286608, 965216, 3278776, 11221548, 38665192, 134050521, 467382224, 1638080277, 5768886048
(list; graph; refs; listen; history; internal format)
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OFFSET
| 6,4
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REFERENCES
| N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Walsh, T. R. S.; Counting nonisomorphic three-connected planar maps. J. Combin. Theory Ser. B 32 (1982), no. 1, 33-44.
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CROSSREFS
| Sequence in context: A173320 A135633 A103096 * A076965 A113232 A095261
Adjacent sequences: A005642 A005643 A005644 * A005646 A005647 A005648
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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