Odd powers of 2 and 9 times odd powers of 2, sorted.

Terms

a(0) =2a(1) =8a(2) =18a(3) =32a(4) =72a(5) =128a(6) =288a(7) =512a(8) =1152a(9) =2048a(10) =4608a(11) =8192a(12) =18432a(13) =32768a(14) =73728a(15) =131072a(16) =294912a(17) =524288a(18) =1179648a(19) =2097152a(20) =4718592a(21) =8388608a(22) =18874368a(23) =33554432a(24) =75497472a(25) =134217728a(26) =301989888a(27) =536870912a(28) =1207959552a(29) =2147483648