203383domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the smallest prime p > a(n-1) such that p - a(n-1) is an (n-1)-almost prime; a(1) = 2.at n=15A276591Indices of the primes that have the same base-10 digits as the corresponding prime number (with multiplicity), disregarding zero digits.at n=33A355318Prime numbersat n=18257