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A278725
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Number of n X 6 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order.
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1
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84, 10401, 2487889, 815294800, 279368748599, 90462380211862, 26947618206791521, 7361981179311574929, 1850980180963910285369, 430395479744245915185211, 93005966539515246802755901
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