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A068294 1/5 the number of colorings of an n X n octagonal array with 5 colors. 0
1, 24, 1344, 187008, 65012352, 56638464768, 123968096842368 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

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

Sequence in context: A188807 A187029 A186967 * A003170 A160310 A187852

Adjacent sequences:  A068291 A068292 A068293 * A068295 A068296 A068297

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 06:05 EST 2012. Contains 205860 sequences.