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A068263 1/13 the number of colorings of an n X n square array with 13 colors. 0
1, 1596, 312900732, 7535656472652144 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A068239-A068305, A000332, A002417, A027441.

Sequence in context: A132654 A179248 A068131 * A078954 A117745 A189456

Adjacent sequences:  A068260 A068261 A068262 * A068264 A068265 A068266

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net), Feb 24 2002

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.