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A002856
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Number of polyhedra with n nodes and n faces.
(Formerly M1864 N0739)
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6
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1, 1, 2, 8, 42, 296, 2635, 25626, 268394, 2937495, 33310550, 388431688, 4637550072, 56493493990, 700335433295
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OFFSET
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4,3
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REFERENCES
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N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Table of n, a(n) for n=4..18.
P. J. Federico, Enumeration of polyhedra: the number of 9-hedra, J. Combin. Theory, 7 (1969), 155-161.
Kyu-Hwan Lee, Se-jin Oh, Catalan triangle numbers and binomial coefficients, arXiv:1601.06685 [math.CO], 2016.
G. P. Michon, Counting Polyhedra
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CROSSREFS
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One of the main diagonals of A212438.
Sequence in context: A225108 A052646 A320343 * A093461 A191994 A153524
Adjacent sequences: A002853 A002854 A002855 * A002857 A002858 A002859
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KEYWORD
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nonn,hard,more,nice
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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More terms from Gerard P. Michon, Mar 29 2002
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STATUS
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approved
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