A266903 Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its north, west or southwest neighbor modulo n and the upper left element equal to 0.

1, 0, 5, 102, 31550, 19336609, 21048933326, 36737059793206, 95191585228772333

Offset

1,3

Comments

Column 3 of A266904.

Links

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

Example

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

Crossrefs

Cf. A266904.

Sequence in context: A123626 A210900 A197799 * A052138 A308459 A142418

Adjacent sequences: A266900 A266901 A266902 * A266904 A266905 A266906

Keyword

nonn

Author

R. H. Hardin, Jan 05 2016

Status

approved