Primes having only {2, 4, 5, 9} as digits.

Terms

a(0) =2a(1) =5a(2) =29a(3) =59a(4) =229a(5) =449a(6) =499a(7) =599a(8) =929a(9) =2459a(10) =2549a(11) =2999a(12) =4229a(13) =4259a(14) =4549a(15) =4999a(16) =5449a(17) =9929a(18) =9949a(19) =22229a(20) =22259a(21) =22549a(22) =24229a(23) =24499a(24) =25229a(25) =25999a(26) =29429a(27) =29599a(28) =29959a(29) =42299