Number of values of k for which phi(k) is a permutation of decimal digits of k, for k < 10^n.
A216385
Number of values of k for which phi(k) is a permutation of decimal digits of k, for k < 10^n.
Terms
- a(0) =1a(1) =3a(2) =5a(3) =21a(4) =78a(5) =403a(6) =2069a(7) =11856a(8) =70835a(9) =437164
External references
- oeis: A216385