Primes having only {3, 4, 5} as digits.

Terms

a(0) =3a(1) =5a(2) =43a(3) =53a(4) =353a(5) =433a(6) =443a(7) =3343a(8) =3433a(9) =3533a(10) =5333a(11) =5443a(12) =33343a(13) =33353a(14) =33533a(15) =34543a(16) =35353a(17) =35533a(18) =35543a(19) =43543a(20) =44453a(21) =44533a(22) =44543a(23) =45343a(24) =45433a(25) =45533a(26) =45553a(27) =53353a(28) =53453a(29) =54443