103451domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that remain prime through 5 iterations of function f(x) = 4x + 3.at n=10A023339Numbers k such that w(k), w(k+1), and w(k+2) are all odd, where w is A360519.at n=31A361106Prime numbersat n=9887