A056846 Number of polyominoids containing n squares: these are 2-dimensional polyominoes in a three-dimensional grid (edge-connected squares, like the floors, ceilings and walls of a building). Mirror images are distinguished.

1, 2, 11, 80, 780, 8781, 104828, 1298506, 16462696, 212457221, 2780615627, 36817036777

Offset

1,2

References

R. A. Epstein, The Theory of Gambling and Statistical Logic, 1977, Academic Press, ISBN 0-12-240760-1 (pages 362-369 discuss polyforms, including Epstein's polyominoids).

Links

Table of n, a(n) for n=1..12.

M. Keller, Counting polyforms

Crossrefs

Cf. A075679, A075678, A277565.

Sequence in context: A341955 A118969 A181068 * A277500 A197718 A359222

Adjacent sequences: A056843 A056844 A056845 * A056847 A056848 A056849

Keyword

nonn,nice,more

Author

N. J. A. Sloane, James A. Sellers, Aug 28 2000

Extensions

Corrected and extended by Joseph Myers, Sep 24 2002

Status

approved