61909

Properties

Appears in sequences

• Expansion of g.f. 1/((1-2x)(1-3x)(1-5x)).at n=6A016273
• 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=38A124960
• Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces the decimal expansion of e (Euler's number).at n=32A257764
• 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=51A343751
• Primes that are the sum of some first primes minus one.at n=17A388261
• Prime numbersat n=6223