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A189338
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Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally
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1
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15, 225, 3375, 36626, 390721, 3988168, 42069350, 442969881, 4709354541, 49857094654, 528436125424, 5591212296038, 59196669906872, 626540356943069, 6633322246811551, 70220475509151710, 743409267344795743
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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 5X4
..0..0..0..1....0..0..0..1....0..0..1..0....0..0..0..1....0..0..0..1
..1..0..1..0....0..0..1..0....0..0..1..0....0..1..1..0....0..0..0..0
..1..0..0..0....0..0..1..1....0..1..0..1....0..0..1..0....0..0..0..1
..0..0..1..0....0..1..0..0....1..0..1..0....1..1..1..0....0..1..1..0
..0..0..0..0....1..1..0..0....1..1..0..1....1..1..0..0....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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