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A180371
1/8 the number of triangular nXnXn arrays of integers in 1..8 with no element or any of its neighbors having the same value.
0
1, 42, 2520, 136080, 6531840, 314616960
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..6.
CROSSREFS
Sequence in context:
A258393
A187365
A294978
*
A046198
A361371
A214580
Adjacent sequences:
A180368
A180369
A180370
*
A180372
A180373
A180374
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Sep 01 2010
STATUS
approved
