124750429783domain: NAppears in sequencesStarting with a(1) = 6, a(n) is the smallest number whose sum of prime divisors (taken with multiplicity) is a(n-1). In other words, a(n) = A056240(a(n-1)).at n=16A318387a(n+1) is the smallest product of two or more primes which sum to a(n), starting from a(1) = 5.at n=17A386524