Powers of fifth root of 18 rounded up.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =11a(5) =18a(6) =33a(7) =58a(8) =102a(9) =182a(10) =324a(11) =578a(12) =1030a(13) =1836a(14) =3272a(15) =5832a(16) =10397a(17) =18533a(18) =33036a(19) =58890a(20) =104976a(21) =187131a(22) =333580a(23) =594640a(24) =1060006a(25) =1889568a(26) =3368349a(27) =6004427a(28) =10703506a(29) =19080095