A267330 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 southwest or northwest neighbors modulo n and the upper left element equal to 0.

1, 35, 65, 396, 1929, 8314, 29393, 99680, 376803, 1268170, 4617875

Offset

1,2

Comments

Superdiagonal 2 of A267328.

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Cf. A267328.

Sequence in context: A292081 A162832 A224485 * A353175 A229357 A254364

Adjacent sequences: A267327 A267328 A267329 * A267331 A267332 A267333

Keyword

nonn

Author

R. H. Hardin, Jan 13 2016

Status

approved