A267545 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, west or southeast neighbor modulo n and the upper left element equal to 0.

1, 0, 1, 255, 55971, 27018228, 26810032261, 44283186874351

Offset

1,4

Comments

Column 3 of A267546.

Links

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

Example

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

Crossrefs

Cf. A267546.

Sequence in context: A177897 A160913 A022190 * A069383 A175824 A238996

Adjacent sequences: A267542 A267543 A267544 * A267546 A267547 A267548

Keyword

nonn

Author

R. H. Hardin, Jan 16 2016

Status

approved