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A267931
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Number of nX4 0..3 arrays with every repeated value in every row and column greater than the previous repeated value.
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1
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222, 49284, 8459154, 1376175262, 205495778969, 29057389299071, 3909876972823819, 505367954515309174, 63080019343371599302, 7640051013859497535548, 901148367450672524043965
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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
..1..3..2..3....1..1..3..0....0..3..0..2....3..0..3..2....3..1..0..2
..3..0..3..0....1..0..0..1....2..0..1..3....2..0..0..3....0..2..2..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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