Primes having only {0, 4, 5, 9} as digits.

Terms

a(0) =5a(1) =59a(2) =409a(3) =449a(4) =499a(5) =509a(6) =599a(7) =4049a(8) =4099a(9) =4409a(10) =4549a(11) =4909a(12) =4999a(13) =5009a(14) =5059a(15) =5099a(16) =5449a(17) =9049a(18) =9059a(19) =9949a(20) =40009a(21) =40099a(22) =40459a(23) =40499a(24) =40559a(25) =40949a(26) =44059a(27) =44449a(28) =44549a(29) =44909