Powers of sqrt(2) rounded up.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =6a(6) =8a(7) =12a(8) =16a(9) =23a(10) =32a(11) =46a(12) =64a(13) =91a(14) =128a(15) =182a(16) =256a(17) =363a(18) =512a(19) =725a(20) =1024a(21) =1449a(22) =2048a(23) =2897a(24) =4096a(25) =5793a(26) =8192a(27) =11586a(28) =16384a(29) =23171