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A183277
Number of n X n X n triangular binary arrays with no three 1's adjacent in a row in any of the three triangular directions.
1
2, 8, 45, 442, 7844, 227960, 11338707, 967001704, 139878150889, 34482378877062, 14485392134699640, 10360611912959874865, 12622082042125925192310, 26191137001819846311849551, 92562230432526123151485183549
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for 4 X 4 X 4 with no three 1's in a row:
.....0........1........0........0........1........0........1........0
....1.1......0.0......0.1......0.0......0.1......0.0......0.1......1.0
...0.0.0....0.1.0....0.0.0....1.1.0....0.1.0....0.1.1....1.1.0....0.1.0
..1.0.0.0..1.1.0.1..1.1.0.0..0.1.0.0..0.0.1.0..1.1.0.1..1.0.0.0..0.1.0.1
CROSSREFS
Sequence in context: A144164 A003091 A119501 * A269006 A266507 A202081
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2011
STATUS
approved