A207052 Number of n X 3 0..3 arrays avoiding the pattern z-1 z-1 z in any row or column.

61, 3721, 197144, 10372376, 545111339, 28644905324, 1505319709390, 79106529010228, 4157126256306541, 218460955980561660, 11480325067745920617, 603301649054317613699, 31704056442805324248386, 1666077318047770545781882

Offset

1,1

Comments

Column 3 of A207057.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..1....0..0..3....1..0..0....0..3..3....3..2..2....0..1..0....2..1..2
..3..3..0....2..3..1....0..0..3....0..1..3....0..2..3....3..2..2....3..0..1
..3..1..1....1..2..0....1..2..1....2..1..1....3..0..1....1..2..1....2..0..0
..3..2..1....1..0..0....0..1..3....2..1..1....2..3..2....1..0..2....1..3..0

Crossrefs

Cf. A207057.

Sequence in context: A206572 A207577 A209087 * A207129 A302329 A218286

Adjacent sequences: A207049 A207050 A207051 * A207053 A207054 A207055

Keyword

nonn

Author

R. H. Hardin, Feb 14 2012

Status

approved