(8^n)-th prime.

Terms

a(0) =2a(1) =19a(2) =311a(3) =3671a(4) =38873a(5) =386093a(6) =3681131a(7) =34136029a(8) =310248241a(9) =2777105129a(10) =24563311309a(11) =215187847711