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A184228
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Half the number of (n+1)X7 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3
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1
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6966, 541936, 22904858, 1292899174, 64280495958, 3390680573862, 174220807520698, 9060575120369248, 468666562795511632, 24302116797857458570, 1258755953102506894388, 65231670365062829035438
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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..2..0..1..0..3..0....2..0..1..0..2..0..3....0..2..0..2..0..3..0
..3..0..3..0..3..0..3....0..3..0..3..1..3..0....3..1..3..1..3..0..1
..1..3..1..3..0..3..2....2..0..2..0..3..0..2....0..3..1..3..0..3..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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