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A180373 1/6 the number of n X n arrays of integers in 1..6 with no element or any of its neighbors having the same value 0
1, 60, 3120, 231720, 20495520, 2637990720 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..6.

CROSSREFS

Sequence in context: A082670 A084659 A230568 * A264947 A004297 A223657

Adjacent sequences:  A180370 A180371 A180372 * A180374 A180375 A180376

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 01 2010

STATUS

approved

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)