A266877 Number of n X 3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, southwest or northwest neighbor modulo n and the upper left element equal to 0.

1, 0, 2, 76, 33529, 22720474, 25455579224, 44453913778842

Offset

1,3

Comments

Column 3 of A266878.

Links

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

Example

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

Crossrefs

Cf. A266878.

Sequence in context: A277298 A087287 A349066 * A301472 A041721 A048358

Adjacent sequences: A266874 A266875 A266876 * A266878 A266879 A266880

Keyword

nonn

Author

R. H. Hardin, Jan 05 2016

Status

approved