a(n) = number of primes that end in 7 among the first 10^n primes.
A300399
a(n) = number of primes that end in 7 among the first 10^n primes.
Terms
- a(0) =2a(1) =24a(2) =254a(3) =2508a(4) =25015a(5) =250014a(6) =2500283a(7) =25000402a(8) =250002505a(9) =2500005319a(10) =25000014226a(11) =250000051446
External references
- oeis: A300399