A267556 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 or northeast neighbors modulo n and the upper left element equal to 0.

1, 126, 410, 2437, 21835, 326500, 7589059, 271504873

Offset

1,2

Comments

Superdiagonal 3 of A267553.

Links

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

Example

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

Crossrefs

Cf. A267553.

Sequence in context: A322542 A323759 A102805 * A268119 A202406 A202399

Adjacent sequences: A267553 A267554 A267555 * A267557 A267558 A267559

Keyword

nonn

Author

R. H. Hardin, Jan 17 2016

Status

approved