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A267978
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Number of 4Xn 0..3 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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222, 49284, 10941048, 2208460532, 422888259007, 77239556027716, 13568675256814069, 2305686585583566677, 380719989364128125411, 61309427889879303297626, 9657019976002416918553516
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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..2....3..2....1..0....2..3....0..1....3..0....3..2....3..0....2..2....0..0
..3..2....1..2....3..0....2..0....3..1....2..2....2..3....1..0....1..3....1..0
..3..1....1..3....1..1....1..0....2..2....1..1....2..0....0..1....0..2....2..1
..2..0....3..2....1..1....2..2....0..0....0..2....3..2....0..1....2..1....0..2
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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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