1542294

Appears in sequences

• Numbers m such that phi(m) is a power of the product of the distinct prime factors of m.at n=35A211413
• Numbers m such that phi(m) = rad(m)^3, where phi is the Euler totient function (A000010) and rad is the squarefree kernel function (A007947).at n=6A328274
• a(n) is the least natural k which is a multiple of prime(n) such that for some m >= 0, phi(k) = rad(k)^m, where phi(k) = A000010(k) and rad(k) = A007947(k).at n=5A337775