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A264729
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Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 6.
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0
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1, 2, 4, 22, 154, 931, 14160, 195952, 2808960, 58924800, 1585406976, 38032879616, 1491624640512, 52205681184768, 2118556421369856
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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=6
..0..4..8..6..2.10....8..0..6..2.10..7....0..4..8..1..9..5....0..6..2..7.11..3
..1..5..9..7..3.11....4..9..1..5.11..3....6.10..2..7..3.11....4..8..9..1..5.10
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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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