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A268366
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Number of n X 6 arrays of permutations of 6 copies of 0..n-1 with row sums equal.
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0
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1, 400, 1054200, 12243840000, 429355384500000, 39489843246336000000, 7875251932432856328000000, 3103313606339070135803904000000, 2222194400107579127937216888000000000
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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=2
..1..1..0..1..0..0....0..1..0..1..0..1....1..0..1..0..1..0....1..1..0..1..0..0
..1..0..1..1..0..0....0..1..1..0..1..0....1..1..0..1..0..0....0..1..0..1..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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