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A278803
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Number of nX4 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.
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1
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15, 154, 1439, 12958, 110455, 870473, 6275546, 41370842, 250517485, 1402100369, 7299678838, 35565305995, 163045228099, 706720556002, 2908736101561, 11411036414661, 42812862296055, 154084456853488, 533397095123831
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