(6^n)-th prime.

Terms

a(0) =2a(1) =13a(2) =151a(3) =1321a(4) =10627a(5) =79349a(6) =567871a(7) =3950183a(8) =26941241a(9) =180902089a(10) =1200241909a(11) =7886347793a(12) =51408151891a(13) =332894613817