Cubes that becomes a prime number when prefixed with a 3.

Terms

a(0) =1a(1) =343a(2) =4913a(3) =226981a(4) =389017a(5) =456533a(6) =571787a(7) =912673a(8) =1295029a(9) =2352637a(10) =5177717a(11) =5735339a(12) =7645373a(13) =9129329a(14) =10218313a(15) =11089567a(16) =19902511a(17) =42508549a(18) =53582633a(19) =103161709a(20) =118370771a(21) =131872229a(22) =138188413a(23) =143055667a(24) =158340421a(25) =186169411a(26) =202262003a(27) =217081801a(28) =228099131