A267403 Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.

1, 126, 64, 220, 795, 2814, 9469, 30728, 95802, 284725, 817017, 2266402

Offset

1,2

Comments

Superdiagonal 3 of A267401.

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Cf. A267401.

Sequence in context: A331401 A267199 A348898 * A267342 A278935 A267395

Adjacent sequences: A267400 A267401 A267402 * A267404 A267405 A267406

Keyword

nonn

Author

R. H. Hardin, Jan 13 2016

Status

approved