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A267624
Number of n X n arrays containing n copies of 0..n-1 with every element equal to or 1 greater than any west neighbor modulo n and the upper left element equal to 0.
1
1, 3, 39, 2386, 679735, 873319806, 4934982616333
OFFSET
1,2
COMMENTS
Diagonal of A267629.
EXAMPLE
Some solutions for n=4
..0..0..1..1....0..0..1..2....0..0..1..2....0..0..1..2....0..0..0..1
..1..2..3..0....0..0..1..1....1..2..2..3....3..3..0..1....2..2..3..3
..3..0..1..2....1..2..3..3....3..3..0..1....1..2..2..3....1..1..2..3
..2..2..3..3....2..2..3..3....0..1..2..3....1..2..3..0....2..3..0..1
CROSSREFS
Cf. A267629.
Sequence in context: A290516 A210925 A300046 * A342178 A376162 A342166
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2016
STATUS
approved