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A219309
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Unchanging value maps: number of n X 7 binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 n X 7 array.
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0
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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=3
..0..0..1..0..0..0..0....1..1..1..0..0..0..1....0..0..0..1..1..0..1
..0..0..0..0..1..0..0....0..1..1..0..0..0..1....0..0..0..0..0..0..0
..1..0..0..0..1..0..0....0..0..1..1..0..0..1....0..1..0..1..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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