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A267267
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Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any north, northeast or northwest neighbors modulo 6 and the upper left element equal to 0.
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0
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 41, 1769, 49639, 1458381, 37756241, 877748731, 18796891493
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OFFSET
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1,12
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=12
..0..0..5..5..4..4..3..3..2..2..2..1....0..1..1..1..2..2..3..3..4..4..5..5
..1..0..0..5..5..4..4..3..3..2..2..2....1..1..1..2..2..3..3..4..4..5..5..0
..1..1..0..0..5..5..4..4..3..3..2..2....1..1..2..2..3..3..4..4..5..5..0..0
..1..1..1..0..0..5..5..4..4..3..3..3....2..2..2..3..3..4..4..5..5..0..0..0
..2..1..1..1..0..0..5..5..4..4..3..3....2..2..3..3..4..4..5..5..0..0..0..1
..2..2..2..1..1..0..0..5..5..4..4..3....2..3..3..4..4..5..5..0..0..1..1..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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