Primes with digits in nondecreasing order.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =13a(6) =17a(7) =19a(8) =23a(9) =29a(10) =37a(11) =47a(12) =59a(13) =67a(14) =79a(15) =89a(16) =113a(17) =127a(18) =137a(19) =139a(20) =149a(21) =157a(22) =167a(23) =179a(24) =199a(25) =223a(26) =227a(27) =229a(28) =233a(29) =239