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A180370 Number of triangular nXnXn arrays with each row k a permutation of 0..k-1 and no element having neighbors with sum mod 3 = 2 0
1, 2, 2, 8, 160, 8576, 2476032 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Sequence in context: A047692 A270316 A069561 * A326939 A011148 A176020

Adjacent sequences:  A180367 A180368 A180369 * A180371 A180372 A180373

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 01 2010

STATUS

approved

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Last modified February 27 05:39 EST 2020. Contains 332299 sequences. (Running on oeis4.)