Powers of cube root of 2 rounded down.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =2a(5) =3a(6) =4a(7) =5a(8) =6a(9) =8a(10) =10a(11) =12a(12) =16a(13) =20a(14) =25a(15) =32a(16) =40a(17) =50a(18) =64a(19) =80a(20) =101a(21) =128a(22) =161a(23) =203a(24) =256a(25) =322a(26) =406a(27) =512a(28) =645a(29) =812