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A278795
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Number of n X 4 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.
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1
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65, 34348, 7196852, 1038462658, 118098679534, 11262497170744, 935318457135084, 69345852411053594, 4667384731526157594, 288452158499377948116, 16500830203851397115132, 878891304960177782094219, 43788704970632405698713439, 2048518813765704043678494853
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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
..3..3..0..1. .2..2..3..0. .2..1..2..3. .2..3..0..0. .1..2..3..0
..3..1..0..1. .2..0..1..3. .2..3..1..1. .0..3..3..3. .3..2..3..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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