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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
OFFSET
1,2
CROSSREFS
Sequence in context: A047692 A270316 A069561 * A326939 A341303 A011148
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 01 2010
STATUS
approved