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A267839
Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any northeast neighbor modulo 6 and the upper left element equal to 0.
0
120, 2430, 147340, 13895954, 1578668020, 197549600170, 26227806728176, 3644859555696454, 525118327614214424
OFFSET
1,1
COMMENTS
Row 6 of A267836.
EXAMPLE
Some solutions for n=3
..0..1..5....0..0..4....0..1..0....0..4..1....0..0..3....0..1..4....0..2..0
..1..5..0....1..5..4....2..1..3....5..2..1....1..3..4....2..5..5....2..1..5
..5..0..2....5..4..3....2..3..3....3..2..1....3..4..4....0..5..2....2..0..3
..1..2..3....5..3..0....4..4..5....3..2..4....5..5..2....0..3..3....1..3..4
..3..4..3....3..1..1....4..5..1....3..5..5....5..2..0....3..4..1....4..5..3
..4..4..2....2..2..2....5..2..0....0..0..4....2..1..1....4..2..1....5..4..1
CROSSREFS
Cf. A267836.
Sequence in context: A056286 A166779 A038745 * A220050 A032180 A000553
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 21 2016
STATUS
approved