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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. +0
2
0, 2, 11, 92, 2100, 140834 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Adjacent sequences: A068389 A068390 A068391 this_sequence A068393 A068394 A068395

Sequence in context: A047854 A122708 A005366 this_sequence A099697 A083069 A098621

KEYWORD

nonn

AUTHOR

Ron Hardin (rhh(AT)cadence.com), Mar 03 2002

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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