54629domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that 13*4^k + 1 is prime.at n=14A0022578th-order Vatalan numbers (generalization of Catalan numbers).at n=4A025761Primes p2 such that p1^3 + p2^2 is an average of twin primes and p1 < p2 are consecutive primes.at n=33A138755Prime numbersat n=5560