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A056769
Puzzle 2, related to polyominoes.
0
1, 9, 64, 601, 5616
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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:
A037540
A037484
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
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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)