Powers k^m, m > 1, odd k that are neither squarefree nor squareful.

Terms

a(0) =2025a(1) =3969a(2) =5625a(3) =9801a(4) =13689a(5) =18225a(6) =21609a(7) =23409a(8) =29241a(9) =30625a(10) =35721a(11) =42849a(12) =60025a(13) =68121a(14) =75625a(15) =77841a(16) =88209a(17) =91125a(18) =99225a(19) =105625a(20) =110889a(21) =123201a(22) =131769a(23) =136161a(24) =140625a(25) =149769a(26) =164025a(27) =178929a(28) =180625a(29) =210681