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A192602
Number of nXnXn triangular 0..3 arrays with each element equal to at least one neighbor and new values 0..3 introduced in row major order
0
0, 1, 12, 566, 128311, 105795037, 292404355298, 2682155757690769
OFFSET
1,3
EXAMPLE
Some solutions for 4X4X4
.....0........0........0........0........0........0........0........0
....1.0......1.0......1.0......0.1......0.1......1.0......0.0......0.0
...2.1.0....1.2.0....1.2.0....1.2.1....0.1.1....1.2.2....1.0.2....1.1.0
..2.3.3.0..3.3.2.0..1.1.2.2..1.2.1.1..0.1.0.0..3.3.3.2..1.3.3.2..1.1.0.0
CROSSREFS
Sequence in context: A224539 A210816 A133415 * A227143 A274259 A192603
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 04 2011
STATUS
approved