Primes that remain prime through 2 iterations of function f(x) = 8x + 3.

Terms

a(0) =5a(1) =13a(2) =31a(3) =61a(4) =101a(5) =103a(6) =163a(7) =191a(8) =233a(9) =241a(10) =251a(11) =433a(12) =461a(13) =643a(14) =751a(15) =761a(16) =821a(17) =863a(18) =983a(19) =1021a(20) =1153a(21) =1193a(22) =1283a(23) =1291a(24) =1531a(25) =1543a(26) =1861a(27) =2281a(28) =2543a(29) =2903