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Search: id:A006433
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| A006433 |
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Number of tree-rooted planar maps.
(Formerly M3720)
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+0
1
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| 0, 4, 175, 3324, 42469, 429120, 3711027, 28723640, 204598130, 1366223880, 8664086470
(list; graph; listen)
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OFFSET
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1,2
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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).
Walsh, T. R. S.; Lehman, A. B.; Counting rooted maps by genus. III: Nonseparable maps. J. Combinatorial Theory Ser. B 18 (1975), 222-259.
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CROSSREFS
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Sequence in context: A057140 A145245 A081783 this_sequence A113254 A127606 A041945
Adjacent sequences: A006430 A006431 A006432 this_sequence A006434 A006435 A006436
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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