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A184667
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Number of (n+1)X4 0..3 arrays with no 2X2 subblock summing to less than 6
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1
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19269, 2405797, 266060160, 30765364899, 3509487618613, 402221585928132, 46028365937520330, 5269979734803579913, 603279614829234560146, 69064202595023175071177, 7906407074804511304606829
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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 3X4
..0..2..0..0....2..2..0..1....0..2..2..1....2..2..2..2....2..2..2..1
..2..2..3..3....3..2..3..2....3..2..2..2....3..0..3..2....2..2..2..1
..3..3..3..3....1..1..2..3....2..3..2..3....3..2..3..1....1..3..0..3
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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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