Primes having only {3, 5, 9} as digits.

Terms

a(0) =3a(1) =5a(2) =53a(3) =59a(4) =353a(5) =359a(6) =593a(7) =599a(8) =953a(9) =3359a(10) =3533a(11) =3539a(12) =3559a(13) =3593a(14) =5333a(15) =5393a(16) =5399a(17) =5939a(18) =5953a(19) =9533a(20) =9539a(21) =33353a(22) =33359a(23) =33533a(24) =33599a(25) =35339a(26) =35353a(27) =35393a(28) =35533a(29) =35593