716167

Appears in sequences

• a(n) is the numerator of Sum_{i = 1..n} 1/prime(i).at n=7A024451
• Triangle of T(n,k) coefficients of polynomials with first n prime numbers as roots.at n=29A070918
• a(n) is the decimal expansion of 7nn7.at n=16A100897
• Numerator of Sum_{ primes p <= n} 1/p.at n=16A106830
• Numerator of Sum_{ primes p <= n} 1/p.at n=17A106830
• Triangle read by rows: T(n,k) is coefficient of x^(n-k) in consecutive prime rooted polynomial of degree n, P(x) = Product_{k=1..n} (x-p(k)) = 1*x^n + T(n,1)*x^(n-1)+ ... + T(n,k-1)*x + T(n,k), for 1 <= k <= n.at n=26A238146
• Triangle read by rows: T(n, k) = coefficient of x^(n-k) in Product_{m=1..n} (x+prime(m)); 0 <= k <= n, n >= 0.at n=34A260613
• a(n) = A003415(A276085(n)), where A003415 is the arithmetic derivative and A276085 is the primorial base log-function.at n=18A373842