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A267402
Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or northwest neighbors modulo n and the upper left element equal to 0.
0
1, 35, 18, 38, 71, 132, 222, 368, 568, 866, 1254, 1799, 2483
OFFSET
1,2
COMMENTS
Superdiagonal 2 of A267401.
EXAMPLE
Some solutions for n=4
..0..1..2..2..3..3....0..1..2..2..2..3....0..1..2..3..3..3....0..1..2..2..3..0
..0..1..2..3..3..0....0..1..2..3..3..3....1..1..2..3..0..0....1..1..2..3..3..0
..1..1..2..3..0..0....1..1..2..3..0..0....1..2..2..3..0..0....1..2..2..3..0..0
..1..2..2..3..0..1....1..1..2..3..0..0....1..2..2..3..0..1....1..2..3..3..0..1
CROSSREFS
Cf. A267401.
Sequence in context: A348893 A088830 A033355 * A217408 A266057 A267341
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2016
STATUS
approved