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A267571
Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any west or southwest neighbors modulo 7 and the upper left element equal to 0.
0
720, 2, 3, 3, 8, 17, 2033, 279070, 27767384, 1883165721, 86034010064, 2749223521421
OFFSET
1,1
COMMENTS
Row 7 of A267562.
EXAMPLE
Some solutions for n=7
..0..0..1..1..2..3..4....0..1..1..2..3..4..5....0..1..2..3..4..5..6
..6..0..1..2..3..4..5....0..1..2..3..4..5..6....1..2..2..3..4..5..6
..0..1..2..3..4..5..6....1..2..3..4..5..6..6....1..2..3..4..5..6..0
..1..2..3..4..5..6..0....1..2..3..4..5..6..0....2..3..4..5..6..0..1
..1..2..3..4..5..6..0....2..3..4..5..6..0..0....3..4..5..6..0..0..1
..1..2..3..4..5..6..6....2..3..4..5..6..0..1....3..4..5..6..0..1..2
..2..3..4..5..5..6..0....3..4..5..6..0..1..2....3..4..5..6..0..1..2
CROSSREFS
Cf. A267562.
Sequence in context: A167984 A267429 A317660 * A267287 A267746 A267026
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2016
STATUS
approved