218233domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form p^2 + (q-p)^2, where p and q are consecutive primes.at n=15A224888Primes p with pi(p), pi(pi(p)) and pi(p^2) all prime, where pi(.) is given by A000720.at n=18A237687Prime numbersat n=19463