950587domain: NAppears in sequencesa(n) = smallest number k such that three consecutive prime numbers prime(n), prime(n+1) and prime(n+2) are divisors of k, k+1 and k+2 respectively.at n=26A180095G.f. satisfies A(x) = 1 + x*A(x) + 2*x^3*A(x)^3.at n=15A367111