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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
OFFSET
1,2
CROSSREFS
Sequence in context: A292424 A225623 A005366 * A164893 A355111 A363116
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Mar 03 2002
STATUS
approved