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A188565
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Number of nX7 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally
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1
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81, 6561, 237116, 11433452, 550371695, 25507294349, 1199747927824, 56394861720488, 2646119200975135, 124263900074691604, 5835027374030395082, 273966247390359990893, 12864061918841330330771, 604024661760799430803651
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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 3X7
..0..0..0..1..0..0..0....0..0..0..0..0..0..1....0..0..1..0..1..0..1
..0..0..1..0..1..1..0....0..0..0..0..1..0..0....0..0..1..0..0..1..0
..1..0..1..0..0..0..0....0..0..1..0..1..1..0....1..1..0..0..0..1..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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