Number of primes of the form 7k+3 less than 10^n.
A091122
Number of primes of the form 7k+3 less than 10^n.
Terms
- a(0) =1a(1) =5a(2) =30a(3) =209a(4) =1613a(5) =13105a(6) =110815a(7) =960213a(8) =8475123a(9) =75843438a(10) =686338138a(11) =6267994788a(12) =57677618350a(13) =534157031248
External references
- oeis: A091122