Primes of the form 3n^3+1.

Terms

a(0) =193a(1) =3001a(2) =8233a(3) =12289a(4) =17497a(5) =24001a(6) =81001a(7) =139969a(8) =164617a(9) =331777a(10) =472393a(11) =585337a(12) =786433a(13) =1029001a(14) =1215673a(15) =1908169a(16) =2654209a(17) =3573049a(18) =5184001a(19) =8232001a(20) =10125001a(21) =10956793a(22) =13722889a(23) =14739001a(24) =15804073a(25) =16355329a(26) =17496001a(27) =24000001