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A056769 Puzzle 2, related to polyominoes. 0
1, 9, 64, 601, 5616 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

From Vicher's table.

LINKS

M. Keller, Counting Polyforms

M. Vicher, Polyforms

CROSSREFS

Sequence in context: A037540 A037484 A013566 * A064546 A067961 A104127

Adjacent sequences:  A056766 A056767 A056768 * A056770 A056771 A056772

KEYWORD

nonn

AUTHOR

James A. Sellers (sellersj(AT)math.psu.edu), Aug 28 2000

EXTENSIONS

Edited by T. D. Noe (noe(AT)sspectra.com), Apr 09 2009

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Last modified February 15 04:23 EST 2012. Contains 205694 sequences.