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A237893
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Number of (n+1)X(3+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal
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1
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13600, 563534, 21793104, 925593210, 39591208852, 1751486936860, 78473090681640, 3575476081277982, 164300744976785348, 7616876069821561510, 354844692646882929540, 16606976461988916982400, 779297991213997884768536
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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=1
..1..1..1..0....3..3..3..3....2..3..3..0....1..0..2..0....1..2..1..1
..1..2..1..2....1..0..3..3....1..3..2..3....1..0..2..2....1..2..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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