927070domain: NAppears in sequencesNumbers n such that n^2 + 1, n^2 + 3, n^2 + 7 and n^2 + 9 are all primes.at n=30A057015Numbers n such that n^2 +1, n^2 +3, n^2 +7, n^2 +9 and n^2 +13 are simultaneously prime.at n=4A057095Numbers k such that k^2 + {1,3,7,13,31} are prime.at n=10A356110