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A264561
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Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.
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0
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..2..4..3....6..5..1..3....6..0..7..3....0..2..6..4....6..2..4..0
..6..5..7..1....0..2..4..7....2..4..1..5....7..5..3..1....3..5..1..7
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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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