Number of primes == 9 (mod 10) less than 10^n.
A073508
Number of primes == 9 (mod 10) less than 10^n.
Terms
- a(0) =0a(1) =5a(2) =38a(3) =303a(4) =2390a(5) =19593a(6) =166032a(7) =1440186a(8) =12711333a(9) =113761326a(10) =1029509896a(11) =9401974132a(12) =86516371101
External references
- oeis: A073508