30993domain: NAppears in sequencesBinomial transform of primes.at n=11A007443Becomes prime after exactly 8 iterations of f(x) = sum of prime factors of x.at n=9A047827Becomes prime or 4 after exactly 10 iterations of f(x) = sum of prime factors of x.at n=2A048132L.g.f.: Sum_{n>=1} x^n/n * Product_{d|n} (1 + d*x^d)^n.at n=12A205485