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A207227
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Number of nX7 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal
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1
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1121, 1256641, 312522517, 125372637881, 47644493869633, 17182219699443153, 6152504033864688529, 2210806175420208130713, 798188687605046033604289, 288544627150883247074217513, 104252111969644072548865787265
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..2..1..0..2..1..0..2....0..0..2..1..0..2..1....0..2..2..2..0..1..2
..1..1..0..2..1..0..0....1..1..2..0..1..2..2....0..1..1..2..2..0..1
..0..0..0..2..0..0..0....1..1..1..2..2..1..0....1..1..1..1..0..0..0
..2..2..0..2..2..2..0....2..2..0..1..2..0..2....1..1..2..0..0..0..2
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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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