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A068296 1/7 the number of colorings of an n X n octagonal array with 7 colors. +0
1
1, 120, 161280, 2451486720, 421421199390720 (list; graph; listen)
OFFSET

1,2
CROSSREFS

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

Sequence in context: A157879 A008978 A077692 this_sequence A123380 A008701 A158043

Adjacent sequences: A068293 A068294 A068295 this_sequence A068297 A068298 A068299

KEYWORD

nonn

AUTHOR

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

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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