login
A266993
Number of nX3 arrays containing 3 copies of 0..n-1 with no element 1 greater than its west, northeast or northwest neighbor modulo n and the upper left element equal to 0.
0
1, 0, 2, 126, 67735, 45049091, 53041447974, 95667493395637
OFFSET
1,3
COMMENTS
Column 3 of A266994.
EXAMPLE
Some solutions for n=5
..0..3..3....0..3..1....0..2..1....0..4..4....0..3..3....0..4..3....0..2..1
..1..0..3....1..4..2....0..4..1....1..4..1....0..2..0....4..3..2....2..4..1
..2..1..0....3..0..3....2..4..2....3..3..2....1..4..4....2..2..1....3..0..3
..1..4..4....0..2..2....3..0..4....3..2..1....1..4..2....1..1..0....4..2..4
..2..4..2....4..4..1....3..1..3....2..0..0....2..1..3....4..3..0....0..3..1
CROSSREFS
Cf. A266994.
Sequence in context: A348159 A157070 A064070 * A364654 A139904 A167414
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2016
STATUS
approved