Primes that remain prime through 3 iterations of function f(x) = 4x + 3.

Terms

a(0) =2a(1) =109a(2) =179a(3) =571a(4) =677a(5) =977a(6) =1279a(7) =1447a(8) =1747a(9) =1901a(10) =2207a(11) =2671a(12) =3119a(13) =3917a(14) =5011a(15) =5399a(16) =5441a(17) =5569a(18) =5791a(19) =6211a(20) =6607a(21) =7079a(22) =7417a(23) =8369a(24) =8831a(25) =9221a(26) =9697a(27) =9769a(28) =11821a(29) =11897