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A068417 Number of partitionings of n X n checkerboard into three edgewise-connected sets. +0
1
0, 4, 258, 10830, 709351 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A132656 A137840 A114561 this_sequence A116967 A003382 A112982

Adjacent sequences: A068414 A068415 A068416 this_sequence A068418 A068419 A068420

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Mar 02 2002

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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