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A278623
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Number of n X 4 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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51, 1952, 49503, 1069536, 21121532, 387542112, 6594175430, 103536313036, 1496475492375, 19928249063688, 245280439959902, 2802425055340520, 29863427285241827, 298206737876251916, 2802780797553511873
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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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FORMULA
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Empirical polynomial of degree 125 (see link above).
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EXAMPLE
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Some solutions for n=3
..0..2..2..0. .1..1..0..0. .1..1..1..0. .0..0..1..0. .1..1..1..0
..2..0..0..2. .1..1..1..2. .2..1..0..2. .1..1..0..1. .2..0..0..1
..2..2..0..0. .1..1..2..2. .0..1..0..0. .2..1..1..2. .1..0..0..2
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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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