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Let D k=[[1,2k,2k-1],[n,n^2+n+2,n^2],[n,...

Let `D _k=[[1,2k,2k-1],[n,n^2+n+2,n^2],[n,n^2+n,n^2+n+2]]`. If `sum_k=1^(n)D_k=96`, then n is equal to

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