A266317 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west or north neighbor modulo n and the upper left element equal to 0.

1, 0, 8, 614, 203051, 136141422, 155788295580, 278117694864594, 729114712023875491

Offset

1,3

Comments

Column 3 of A266318.

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Cf. A266318.

Sequence in context: A090923 A336941 A337842 * A080320 A083942 A274588

Adjacent sequences: A266314 A266315 A266316 * A266318 A266319 A266320

Keyword

nonn

Author

R. H. Hardin, Dec 27 2015

Status

approved