315850

Appears in sequences

• Expansion of g.f. 1/((1-2x)(1-3x)(1-5x)).at n=7A016273
• Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 16 (most significant digit on right, least significant zeros not written).at n=28A061945
• Triangle read by rows: T(n,k) = p(k)*T(n-1,k) + T(n-1,k-1) (1 <= k <= n), where p(k) denotes the k-th prime.at n=47A124960
• A(n,k) is the sum of all compositions [c_1, c_2, ..., c_k] of n into k nonnegative parts encoded as Product_{i=1..k} prime(i)^(c_i); square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=62A343751