98041domain: NPropertiesPrimalityPrimeyesAppears in sequences6th row of number array A083064.at n=6A083067First superdiagonal of number array A083064.at n=5A083070Triangle T(n, k) read by rows: T(0, 0) = 1 and T(n, k) = Sum_{i=0..k-1} T(n, i) + Sum_{i=k..n-1} T(n-1, i).at n=20A318301Prime numbersat n=9422