1047585domain: NAppears in sequencesNumbers k such that k^2+2, k^3+2, k^4+2 and k^5+2 are all prime.at n=17A214001Numbers k such that k + 2, k^2 + 2, k^3 + 2, k^4 + 2 and k^5 + 2 are all prime.at n=5A216930