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A192487
Half the number of n X n X n triangular binary arrays with every element equal to at most 5 neighbors.
1
1, 4, 32, 504, 15704, 967040, 117706400, 28318463392, 13466466727872, 12657620455508224, 23516077513008447744, 86355918572493456505728, 626806864356196966410513920, 8992693476394949632573847880832
OFFSET
1,2
LINKS
EXAMPLE
Some solutions for 5 X 5 X 5 with a(1,1) = 0
......0..........0..........0..........0..........0..........0..........0
.....0.0........0.0........0.0........1.0........0.1........0.0........1.0
....0.1.1......0.1.1......0.1.1......0.1.0......1.1.1......1.0.0......0.0.1
...1.1.1.1....1.0.1.1....0.0.1.1....1.1.0.0....1.0.1.1....1.1.0.0....1.0.0.1
..0.1.0.1.0..1.0.0.1.0..1.0.0.0.0..1.0.1.0.0..1.0.1.0.0..0.0.1.1.0..0.0.0.1.1
CROSSREFS
Sequence in context: A086906 A034663 A192501 * A093581 A102557 A144935
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 02 2011
STATUS
approved