A267282 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 southwest or northwest neighbors modulo n and the upper left element equal to 0.

1, 126, 2840, 104742, 5977624, 466131976

Offset

1,2

Comments

Superdiagonal 3 of A267278.

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Cf. A267278.

Sequence in context: A219005 A202398 A113857 * A008397 A329754 A202593

Adjacent sequences: A267279 A267280 A267281 * A267283 A267284 A267285

Keyword

nonn

Author

R. H. Hardin, Jan 12 2016

Status

approved