A266290 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, west or northeast neighbor modulo n and the upper left element equal to 0.

1, 0, 5, 91, 40727, 20874574, 23274835718, 39868129982498, 102457584348682968

Offset

1,3

Comments

Column 3 of A266291.

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=5
..0..4..4....0..0..4....0..2..4....0..3..2....0..2..2....0..4..2....0..4..3
..4..3..3....3..3..3....0..2..1....0..2..0....0..4..2....3..2..0....2..2..2
..2..1..0....2..2..2....2..4..4....2..4..4....3..1..4....1..4..3....4..1..4
..1..0..2....1..1..0....1..3..3....1..3..1....3..3..1....4..3..2....1..1..3
..3..2..1....1..4..4....1..0..3....3..1..4....1..0..4....1..1..0....0..0..3

Crossrefs

Cf. A266291.

Sequence in context: A340052 A340883 A109625 * A348347 A222903 A024069

Adjacent sequences: A266287 A266288 A266289 * A266291 A266292 A266293

Keyword

nonn

Author

R. H. Hardin, Dec 26 2015

Status

approved