a(n) is the number of primes between n! and (2n)!.

A076960

a(n) is the number of primes between n! and (2n)!.

Terms

    a(0) =0a(1) =8a(2) =125a(3) =4222a(4) =258659a(5) =25306159a(6) =3610490130a(7) =706003793908

External references