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A097029 as a simple table

na(n)
11
22
33
44
58
615
716
832
964
10128
11255
12256
13512
141024
152048
164096
178192
1816384
1932768
2065535
2165536
22131072
23262144
24524288
251048576
262097152
274194304
288388608
2916777216
3033554432
3167108864
3283623935
33134217728
34268435456
35536870912
361073741824
372147483648
384294967295

[1,2,3,4,8,15,16,32,64,128,255,256,512,1024,2048,
 4096,8192,16384,32768,65535,65536,131072,262144,
 524288,1048576,2097152,4194304,8388608,16777216,
 33554432,67108864,83623935,134217728,268435456,
 536870912,1073741824,2147483648,4294967295]