305068

Appears in sequences

• a(n) = prime(prime(prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1) - 1) - 1.at n=9A141130
• a(n) = f(f(f(f(f(n))))), where f(n) is prime(n)-1.at n=22A141139