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A267331
Number of n X (n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo n and the upper left element equal to 0.
0
1, 126, 202, 2516, 39176, 552162, 6837388, 77332028, 812885568, 8070454972, 77792565998
OFFSET
1,2
COMMENTS
Superdiagonal 3 of A267328.
EXAMPLE
Some solutions for n=4
..0..1..1..2..2..3..0....0..1..1..2..2..3..3....0..0..1..1..2..2..3
..0..1..1..2..3..3..3....1..1..2..2..3..3..0....3..0..1..1..2..3..3
..0..1..2..2..3..3..0....0..1..2..2..3..0..0....0..0..1..2..2..3..3
..0..1..1..2..2..3..0....0..1..2..3..3..0..1....0..1..1..2..2..3..0
CROSSREFS
Cf. A267328.
Sequence in context: A203566 A320292 A104395 * A267739 A290203 A254370
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Jan 13 2016
STATUS
approved