Numbers k such that phi(k) - 1 divides k, where phi is Euler's totient function.
A202855
Numbers k such that phi(k) - 1 divides k, where phi is Euler's totient function.
Terms
- a(0) =3a(1) =4a(2) =6a(3) =12a(4) =60a(5) =1020a(6) =262140a(7) =334495740a(8) =17179869180
External references
- oeis: A202855