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A267560
Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north or northeast neighbors modulo 6 and the upper left element equal to 0.
0
1, 2, 5, 14, 54, 279, 2041, 22189, 326500, 5621462, 104501293, 2016824167, 39643063478, 785897007104
OFFSET
1,2
COMMENTS
Row 6 of A267553.
EXAMPLE
Some solutions for n=4
..0..1..2..2....0..0..1..2....0..1..1..2....0..5..0..1....0..0..0..0
..1..2..3..3....1..1..2..3....1..1..2..3....0..0..1..2....1..1..1..1
..2..3..4..4....2..2..3..4....2..2..3..4....1..1..2..3....2..2..2..2
..3..4..5..5....3..3..4..5....3..3..4..5....2..2..3..4....3..3..3..3
..4..5..0..0....4..4..5..0....4..4..5..0....3..3..4..5....4..4..4..4
..5..0..1..1....5..5..0..1....5..5..0..0....4..4..5..5....5..5..5..5
CROSSREFS
Cf. A267553.
Sequence in context: A081439 A052649 A267561 * A122594 A267559 A047136
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2016
STATUS
approved