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A068392
Number of partitions of n X n checkerboard into two edgewise-connected sets, counting partitions equal under rotation or reflection only once.
4
0, 2, 11, 92, 2100, 140834
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Cf.
A068381
,
A068393
.
Sequence in context:
A292424
A225623
A005366
*
A164893
A355111
A363116
Adjacent sequences:
A068389
A068390
A068391
*
A068393
A068394
A068395
KEYWORD
nonn
,
more
AUTHOR
R. H. Hardin
, Mar 03 2002
STATUS
approved
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Last modified September 17 08:24 EDT 2024. Contains 375985 sequences. (Running on oeis4.)