2948399domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the smallest prime such that exactly n prime pairs (p,q) exist with a(n) = p * q + p + q.at n=24A198277Primes of the form (k^3 - k^2 - k - 1)/2 for some integer k > 0.at n=33A268063Prime numbersat n=213338