Position of n-th 5 in A030604.

Terms

a(0) =4a(1) =11a(2) =18a(3) =25a(4) =29a(5) =32a(6) =44a(7) =45a(8) =52a(9) =53a(10) =56a(11) =67a(12) =68a(13) =69a(14) =76a(15) =77a(16) =85a(17) =106a(18) =112a(19) =118a(20) =120a(21) =121a(22) =129a(23) =151a(24) =162a(25) =164a(26) =167a(27) =170a(28) =173a(29) =190