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A056780 Rectangular polyominoes: number of n-celled polyominoes when the cell is a rectangle. +0
1
1, 2, 3, 9, 21, 68, 208, 730, 2542, 9287 (list; graph; listen)
OFFSET

1,2

LINKS

M. Vicher, Polyforms

M. Vicher, The 21 5-celled rectangular polyominoes

M. Vicher, The 21 5-celled rectangular polyominoes

CROSSREFS

Sequence in context: A101531 A099607 A077550 this_sequence A111360 A111238 A057832

Adjacent sequences: A056777 A056778 A056779 this_sequence A056781 A056782 A056783

KEYWORD

nice,nonn

AUTHOR

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

EXTENSIONS

Edited by njas, Apr 25, 2001

page 1

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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