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A278890
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Number of nX2 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
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1
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0, 0, 161, 12392, 389640, 7709668, 112188011, 1300739542, 12621192562, 105953411156, 788164855062, 5289150309598, 32465951875890, 184286234335846, 975907732553934, 4856388450986535, 22846263739979319, 102119704122961051
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