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A220934
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Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nX5 array
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1
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7, 200, 5912, 172904, 4983202, 143495572, 4129000493, 118791182035, 3417440488681, 98313052773312, 2828261800424005, 81363108971612428, 2340643785326878730, 67335342944117783361, 1937094540263542667587
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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..1..0..1..1....0..0..1..0..0....0..1..1..0..0....0..0..0..0..1
..0..0..0..0..1....1..1..1..0..0....1..0..0..0..0....0..1..0..0..1
..0..1..1..1..0....0..0..1..1..0....0..0..0..1..0....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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