A056769 Puzzle 2, related to polyominoes.

1, 9, 64, 601, 5616

Offset

0,2

Comments

From Vicher's table.

Links

Table of n, a(n) for n=0..4.

M. Keller, Counting Polyforms

M. Vicher, Polyforms

Crossrefs

Sequence in context: A037484 A378566 A013566 * A273232 A064546 A351591

Adjacent sequences: A056766 A056767 A056768 * A056770 A056771 A056772

Keyword

nonn

Author

James A. Sellers, Aug 28 2000

Extensions

Edited by T. D. Noe, Apr 09 2009

Status

approved