Near-repdigit primes with 9 as repeated digit.

Terms

a(0) =199a(1) =499a(2) =599a(3) =919a(4) =929a(5) =991a(6) =997a(7) =1999a(8) =2999a(9) =4999a(10) =8999a(11) =9199a(12) =9929a(13) =9949a(14) =49999a(15) =59999a(16) =79999a(17) =94999a(18) =98999a(19) =99929a(20) =99989a(21) =99991a(22) =199999a(23) =599999a(24) =799999a(25) =989999a(26) =991999a(27) =999199a(28) =999499a(29) =999599