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

Terms

a(0) =29a(1) =139a(2) =1129a(3) =1409a(4) =2339a(5) =2939a(6) =3389a(7) =4549a(8) =7309a(9) =10009a(10) =10039a(11) =11489a(12) =12539a(13) =13859a(14) =15259a(15) =17159a(16) =17569a(17) =20939a(18) =22079a(19) =24229a(20) =24509a(21) =27799a(22) =28099a(23) =29339a(24) =30029a(25) =32059a(26) =33599a(27) =34469a(28) =37379a(29) =37619