Triangle read by rows: T(n,k)=(n+2)(k+1)(k+2)(k-2n-2)(k-2n-3)/24 for 0<=k<=n. 1, 5, 9, 14, 30, 40, 30, 70, 105, 125, 55, 135, 216, 280, 315, 91, 231, 385, 525, 630
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