Numbers k such that 2^k + 13 is prime.

Terms

a(0) =2a(1) =4a(2) =8a(3) =20a(4) =38a(5) =64a(6) =80a(7) =292a(8) =1132a(9) =4108a(10) =19934a(11) =125278a(12) =175628a(13) =282184