A126139 Number of non-rectangular polyominoes with n cells that tile a rectangle with congruent copies.

0, 0, 1, 2, 3, 8, 5, 11, 39

Offset

1,4

References

S. W. Golomb, Polyominoes, second edition, Chapter 8, pp. 97-110, Princeton University Press, 1994.

Links

Table of n, a(n) for n=1..9.

M. Reid, Rectifiable polyomino page.

Formula

a(n) = A126138(n) - A038548(n).

Crossrefs

Cf. A126138, A126140, A126141.

Sequence in context: A332221 A340393 A332222 * A296070 A060872 A162775

Adjacent sequences: A126136 A126137 A126138 * A126140 A126141 A126142

Keyword

hard,more,nonn

Author

William Rex Marshall, Dec 19 2006, Feb 15 2007

Status

approved