20325domain: NAppears in sequencesSum of the prime(n) primes following prime(n).at n=20A099274Sequence of pairs k,g such that k*2^n-1, k*2^n-1+g, k*2^n-1+2*g, and k*2^n+3*g are four consecutive primes in arithmetic progression for the smallest odd k.at n=50A230699G.f. A(x) satisfies A(x) = 1 / (1 - x - x^2 * A(x^3)).at n=19A367666