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A183706
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Number of (n+1)X6 0..3 arrays with every 2X2 subblock nonsingular
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1
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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 3X6
..0..2..0..2..0..2....0..2..0..2..0..1....0..2..0..2..0..2....0..2..0..2..0..3
..2..0..2..0..2..1....1..0..2..0..2..0....3..0..2..0..2..0....2..0..2..0..2..3
..2..1..0..3..3..0....2..1..1..3..1..2....0..3..1..3..0..1....0..3..1..3..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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