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Search: id:A006429
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| A006429 |
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Tree-rooted planar maps.
(Formerly M3716)
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+0
1
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| 0, 4, 135, 1368, 7350, 28400, 89073, 241220, 585057, 1301420, 2699125
(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: A064227 A146547 A045482 this_sequence A016483 A102986 A012160
Adjacent sequences: A006426 A006427 A006428 this_sequence A006430 A006431 A006432
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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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