

A002856


Number of polyhedra with n nodes and n faces.
(Formerly M1864 N0739)


6



1, 1, 2, 8, 42, 296, 2635, 25626, 268394, 2937495, 33310550, 388431688, 4637550072, 56493493990, 700335433295
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OFFSET

4,3


REFERENCES

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).


LINKS

Table of n, a(n) for n=4..18.
P. J. Federico, Enumeration of polyhedra: the number of 9hedra, J. Combin. Theory, 7 (1969), 155161.
KyuHwan Lee, Sejin Oh, Catalan triangle numbers and binomial coefficients, arXiv:1601.06685 [math.CO], 2016.
G. P. Michon, Counting Polyhedra


CROSSREFS

One of the main diagonals of A212438.
Sequence in context: A078592 A225108 A052646 * A093461 A191994 A153524
Adjacent sequences: A002853 A002854 A002855 * A002857 A002858 A002859


KEYWORD

nonn,hard,more,nice


AUTHOR

N. J. A. Sloane.


EXTENSIONS

More terms from Gerard P. Michon, Mar 29 2002


STATUS

approved



