Numbers n such that 3*14^n-1 is prime.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =15a(5) =31a(6) =53a(7) =100a(8) =108a(9) =188a(10) =328a(11) =568a(12) =816a(13) =1013a(14) =1912a(15) =4008a(16) =4155a(17) =8686a(18) =10747