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A215179
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Number of nXnXn triangular 0..5 arrays with every horizontal row nondecreasing, first elements of rows nonincreasing, last elements of rows nondecreasing, and every row having the same average value
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1
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6, 12, 38, 192, 1558, 18940, 364970, 10283548, 429504540, 25437005278, 2101856931492, 235596818865156, 35497898136868548, 7006717056754996580, 1795137645392400993718, 583598433809166736549828
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