125325127domain: NPropertiesPrimalityPrimeyesAppears in sequencesLet p be the n-th odd prime. a(n) is the least prime congruent to 7 modulo 8 such that Legendre(-a(n), q) = -Legendre(-1, q) for all odd primes q <= p.at n=18A001988Prime numbersat n=7127594