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A267563
Number of (n+1)Xn arrays containing n copies of 0..n+1-1 with every element equal to or 1 greater than any west or southwest neighbors modulo n and the upper left element equal to 0.
0
1, 2, 3, 3, 8, 17, 76, 424, 6402, 82456, 2772850
OFFSET
1,2
COMMENTS
Subdiagonal 1 of A267562.
EXAMPLE
Some solutions for n=5
..0..1..2..2..3....0..1..2..3..4....0..0..1..1..2....0..0..0..0..0
..0..1..2..3..4....1..2..3..4..5....0..0..1..2..3....5..5..5..5..5
..1..2..3..4..5....2..3..4..5..0....0..1..2..3..4....4..4..4..4..4
..2..3..4..5..0....3..4..5..0..1....1..2..3..4..5....3..3..3..3..3
..3..4..5..0..1....4..5..0..1..2....2..3..4..5..5....2..2..2..2..2
..4..5..5..0..1....5..0..1..2..3....3..4..4..5..5....1..1..1..1..1
CROSSREFS
Cf. A267562.
Sequence in context: A357655 A297703 A263464 * A166994 A059083 A207626
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2016
STATUS
approved