Number of primes of the form 4k+1 less than 10^n.
A091098
Number of primes of the form 4k+1 less than 10^n.
Terms
- a(0) =1a(1) =11a(2) =80a(3) =609a(4) =4783a(5) =39175a(6) =332180a(7) =2880504a(8) =25423491a(9) =227523275a(10) =2059020280a(11) =18803924340a(12) =173032709183
External references
- oeis: A091098