Numbers k such that phi(k) is equal to the product of (the sum of prime factors and the sum of exponents) of k-1.
A039774
Numbers k such that phi(k) is equal to the product of (the sum of prime factors and the sum of exponents) of k-1.
Terms
- a(0) =3a(1) =5a(2) =9a(3) =25a(4) =31a(5) =57a(6) =116a(7) =144a(8) =154a(9) =288a(10) =372a(11) =414a(12) =624a(13) =792a(14) =10032
External references
- oeis: A039774