Powers of primes other than 2 and 5 in order by cycle length of reciprocal in decimal.

Terms

a(0) =3a(1) =9a(2) =11a(3) =27a(4) =37a(5) =101a(6) =41a(7) =271a(8) =7a(9) =13a(10) =239a(11) =4649a(12) =73a(13) =137a(14) =81a(15) =333667a(16) =9091a(17) =21649a(18) =513239a(19) =9901a(20) =53a(21) =79a(22) =265371653a(23) =909091a(24) =31a(25) =2906161a(26) =17a(27) =5882353a(28) =2071723a(29) =5363222357