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A278307
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Number of nX6 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.
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1
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266, 51562, 11557658, 2506281752, 507575149862, 100825279690194, 20065923383306483, 3886257287342627627, 704764955038032952712, 117079743963382645853885, 17705807900846493728558253
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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
..0..0..1..1..2..0. .0..0..0..1..0..1. .0..0..1..1..0..2. .0..0..0..1..0..2
..1..2..1..2..2..0. .0..1..2..2..1..0. .1..1..0..2..2..1. .0..0..1..2..2..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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