a(n) is the least k (not a 5th power) such that the decimal part of k^(1/5) starts with n.

Terms

a(0) =33a(1) =2a(2) =3a(3) =4a(4) =6a(5) =8a(6) =11a(7) =15a(8) =19a(9) =25a(10) =41a(11) =42a(12) =43a(13) =44a(14) =2a(15) =46a(16) =48a(17) =49a(18) =50a(19) =51a(20) =52a(21) =53a(22) =54a(23) =56a(24) =3a(25) =58a(26) =59a(27) =61a(28) =62a(29) =63