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A267400
Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any north, west or northeast neighbors modulo 7 and the upper left element equal to 0.
0
1, 2, 5, 12, 36, 135, 649, 4277, 38879, 451730, 5950744, 80445962, 1059841613, 13339486516
OFFSET
1,2
COMMENTS
Row 7 of A267392.
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..0..0..0....0..1..2..3....0..1..2..2....0..1..1..2
..1..1..1..2....1..1..1..1....1..2..3..4....1..2..3..3....1..1..2..3
..2..2..2..3....2..2..2..2....2..3..4..5....2..3..4..4....2..2..3..4
..3..3..3..4....3..3..3..3....3..4..5..6....3..4..5..5....3..3..4..5
..4..4..4..5....4..4..4..4....4..5..6..0....4..5..6..6....4..4..5..6
..5..5..5..6....5..5..5..5....5..6..0..1....5..6..0..0....5..5..6..0
..6..6..6..0....6..6..6..6....6..0..1..2....6..0..1..1....6..6..0..0
CROSSREFS
Cf. A267392.
Sequence in context: A267397 A267398 A267399 * A363064 A052302 A280275
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2016
STATUS
approved