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A193324
Number of nXnXn triangular 0..2 arrays with each element equal to the product mod 3 of two neighbors
0
0, 5, 21, 613, 52762, 11259545, 6420980857, 9905776786313, 41165813245599155
OFFSET
1,2
EXAMPLE
Some solutions for 4X4X4
.....0........0........1........1........1........0........2........1
....0.0......0.1......1.1......2.2......2.2......0.2......2.1......1.1
...1.2.2....1.1.1....1.1.2....0.1.1....1.2.2....1.2.1....0.0.1....1.1.1
..1.1.1.2..1.1.2.2..1.1.2.1..0.0.2.2..2.2.2.1..2.2.1.1..0.0.2.2..2.2.1.1
CROSSREFS
Sequence in context: A009758 A143503 A144779 * A220002 A156860 A225846
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 22 2011
STATUS
approved