Prime having only {0, 1, 4, 9} as digits.

Terms

a(0) =11a(1) =19a(2) =41a(3) =101a(4) =109a(5) =149a(6) =191a(7) =199a(8) =401a(9) =409a(10) =419a(11) =449a(12) =491a(13) =499a(14) =911a(15) =919a(16) =941a(17) =991a(18) =1009a(19) =1019a(20) =1049a(21) =1091a(22) =1109a(23) =1409a(24) =1499a(25) =1901a(26) =1949a(27) =1999a(28) =4001a(29) =4019