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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
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
CROSSREFS
Sequence in context:
A047692
A270316
A069561
*
A326939
A341303
A011148
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 May 5 22:20 EDT 2024. Contains 372290 sequences. (Running on oeis4.)