Primes that remain prime through 3 iterations of function f(x) = 8x + 9.

Terms

a(0) =23a(1) =643a(2) =2293a(3) =5023a(4) =5653a(5) =9643a(6) =10723a(7) =11503a(8) =12823a(9) =15493a(10) =18353a(11) =18773a(12) =28403a(13) =32003a(14) =32183a(15) =41953a(16) =42853a(17) =45233a(18) =49853a(19) =50873a(20) =52103a(21) =53113a(22) =54623a(23) =56123a(24) =76003a(25) =80803a(26) =84443a(27) =86783a(28) =88813a(29) =89413