A267341 Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo n and the upper left element equal to 0.

1, 35, 24, 135, 1223, 18140, 413155, 14116549, 711260225

Offset

1,2

Comments

Superdiagonal 2 of A267338.

Links

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

Example

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

Crossrefs

Cf. A267338.

Sequence in context: A267402 A217408 A266057 * A174027 A259083 A244214

Adjacent sequences: A267338 A267339 A267340 * A267342 A267343 A267344

Keyword

nonn

Author

R. H. Hardin, Jan 13 2016

Status

approved