A266041 Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any vertical or antidiagonal neighbor equal to n-1.

1, 0, 30, 2408, 1477440, 854084640, 1480836132576, 2354482052331648

Offset

1,3

Comments

Column 3 of A266042.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A266042.

Sequence in context: A230272 A230612 A138916 * A091544 A230728 A352652

Adjacent sequences: A266038 A266039 A266040 * A266042 A266043 A266044

Keyword

nonn

Author

R. H. Hardin, Dec 20 2015

Status

approved