A002856 Number of polyhedra with n nodes and n faces. (Formerly M1864 N0739)

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

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 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

Crossrefs

One of the main diagonals of A212438.

Sequence in context: A052646 A352646 A320343 * 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