Total number of 9's digits in primes less than 10^n.
A231598
Total number of 9's digits in primes less than 10^n.
Terms
- a(0) =0a(1) =6a(2) =67a(3) =646a(4) =6130a(5) =58145a(6) =558956a(7) =5432190a(8) =53071838a(9) =520787464a(10) =5127052380a(11) =50599825547a(12) =500350977737
External references
- oeis: A231598