Number of primes less than 10^n with initial digit 9.
A073509
Number of primes less than 10^n with initial digit 9.
Terms
- a(0) =0a(1) =1a(2) =15a(3) =127a(4) =1006a(5) =8230a(6) =70320a(7) =614821a(8) =5453140a(9) =48982456a(10) =444608278a(11) =4070532710a(12) =37535715441a(13) =348245215460
External references
- oeis: A073509