71166625530
domain: N
Appears in sequences
- Increasing sequence obtained by union of two sequences A136354 and {b(n)}, where b(n) is the smallest composite number m such that m+1 is prime and the set of distinct prime factors of m consists of the first n primes.at n=18A136357
- Numbers k where records occur for phi(k+1)/phi(k), where phi is the Euler totient function (A000010).at n=22A335069