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

Author

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

Keywords

• nonn
• nice
• more

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

• M. Keller, Counting polyforms

Crossrefs

Cf. A075679, A075678, A277565.

Extensions

Corrected and extended by Joseph Myers, Sep 24 2002