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A278891
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Number of nX3 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, 161, 52424, 6888340, 518626568, 27351484380, 1123462079180, 38208069702548, 1117773552649752, 28854012889071265, 669117722718849452, 14125545954412619268, 274254133053070192532, 4937202122626940281323
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