Primes p such that 2*p#-1 is prime.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =17a(5) =19a(6) =37a(7) =71a(8) =79a(9) =113a(10) =857a(11) =863a(12) =16361a(13) =62989