A267833 Number of nX3 arrays containing 3 copies of 0..n-1 with every element equal to or 1 greater than any northeast neighbor modulo n and the upper left element equal to 0.

1, 10, 91, 924, 10924, 147340, 2247540, 38338680, 723997540, 15008679840, 339055348800

Offset

1,2

Comments

Column 3 of A267836.

Links

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

Example

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

Crossrefs

Cf. A267836.

Sequence in context: A343354 A338678 A347260 * A354380 A015467 A144783

Adjacent sequences: A267830 A267831 A267832 * A267834 A267835 A267836

Keyword

nonn

Author

R. H. Hardin, Jan 21 2016

Status

approved