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A268023
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Number of nX4 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.
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1
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78, 6084, 295962, 13530274, 528293442, 19177213020, 642612340592, 20358126145678, 612589053437088, 17674943525434667, 491314996740768425, 13223822255444331592, 345845237074776797318, 8816893125592668315273
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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=2
..2..1..0..0....1..0..2..2....2..0..0..1....2..0..1..1....0..0..2..2
..1..0..2..0....2..1..1..1....2..1..0..2....0..0..2..1....1..2..0..1
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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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