Primes of the form 6n^2 - 2n - 1.

Terms

a(0) =3a(1) =19a(2) =47a(3) =139a(4) =367a(5) =467a(6) =839a(7) =1319a(8) =1699a(9) =1907a(10) =3407a(11) =4003a(12) =4987a(13) =6079a(14) =7703a(15) =10499a(16) =11527a(17) =13159a(18) =16747a(19) =17387a(20) =19379a(21) =23687a(22) =25219a(23) =26003a(24) =30103a(25) =32707a(26) =33599a(27) =35419a(28) =38239a(29) =44203