376417domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that (10^k - 3^k)/7 is prime.at n=8A128026Expansion of e.g.f. A(x) = 1/F(oo,x) where F(oo,x) is the limit of the process F(n,x) = (F(n-1,x)^n - x^n)^(1/n) for n > 0, starting with F(0,x) = 1.at n=7A361767Prime numbersat n=32018