A267624 Number of n X n arrays containing n copies of 0..n-1 with every element equal to or 1 greater than any west neighbor modulo n and the upper left element equal to 0.

1, 3, 39, 2386, 679735, 873319806, 4934982616333

Offset

1,2

Comments

Diagonal of A267629.

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Cf. A267629.

Sequence in context: A290516 A210925 A300046 * A342178 A342166 A188410

Adjacent sequences: A267621 A267622 A267623 * A267625 A267626 A267627

Keyword

nonn

Author

R. H. Hardin, Jan 18 2016

Status

approved