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A278625
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Number of nX6 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
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1
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266, 31605, 3438414, 387542112, 43853346948, 4902306226424, 540194658701142, 58237100230743229, 6049936223396297740, 596291979361147397590, 55176657492423943503531, 4770167181501151268299031
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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..2..2..1..1..0. .1..0..2..1..0..0. .0..0..2..0..0..0. .2..0..0..2..1..0
..1..2..1..0..0..1. .2..2..1..2..2..2. .2..1..1..2..2..2. .2..2..0..0..2..0
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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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