Number of 9-almost primes less than or equal to 10^n.
A120050
Number of 9-almost primes less than or equal to 10^n.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =2a(4) =47a(5) =671a(6) =8491a(7) =101787a(8) =1180751a(9) =13377156a(10) =148930536a(11) =1636170477a(12) =17787688377a(13) =191742524399
External references
- oeis: A120050