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A207549
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Number of nX7 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal
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1
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1791, 3207681, 3434478282, 3444706587880, 3281119335987704, 3082694275519480041, 2876868686935789680075, 2678620674955838194068380, 2491610702126355619980595983, 2316819788394652271932508770307
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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
..1..1..0..2..2..0..2....1..1..0..2..1..1..2....2..1..1..0..0..0..1
..0..1..1..1..2..0..1....1..1..0..1..0..0..1....1..2..0..0..2..1..2
..0..1..0..1..1..2..2....0..1..0..0..0..2..2....0..2..1..2..0..0..0
..2..2..0..1..0..1..0....1..1..1..2..2..2..0....2..1..1..0..0..0..0
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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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