Number of totient numbers, phi(k), k <= 10^n, whose initial digit is 1.
A308945
Number of totient numbers, phi(k), k <= 10^n, whose initial digit is 1.
Terms
- a(0) =2a(1) =20a(2) =213a(3) =2152a(4) =21594a(5) =216009a(6) =2159776a(7) =21595522a(8) =215951111a(9) =2159507603a(10) =21595061256a(11) =215950604593
External references
- oeis: A308945