202309domain: NPropertiesPrimalityPrimeyesAppears in sequencesG.f.: A(x) = 1 + x/exp( Sum_{k>=1} (A((-1)^k*x) - 1)^k/k ).at n=23A157674Primes of the form 7n^2 + 9.at n=25A201609Primes which have the same (base 10) digital sum A007953 as the next smaller and next larger prime.at n=7A217875Prime numbersat n=18171