Powers of fifth root of 4 rounded up.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =4a(6) =6a(7) =7a(8) =10a(9) =13a(10) =16a(11) =22a(12) =28a(13) =37a(14) =49a(15) =64a(16) =85a(17) =112a(18) =148a(19) =195a(20) =256a(21) =338a(22) =446a(23) =589a(24) =777a(25) =1024a(26) =1352a(27) =1783a(28) =2353a(29) =3105