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A103745 as a simple table

na(n)
11
22
35
48
517
634
765
8128
9257
10514
111029
122048
134097
148194
1516385
1632768
1765537
18131074
19262149
20524296
211048577
222097154
234194305
248388608
2516777217
2633554434
2767108869
28134217728
29268435457
30536870914
311073741825
322147483648
334294967297
348589934594
3517179869189

[1,2,5,8,17,34,65,128,257,514,1029,2048,4097,8194,
 16385,32768,65537,131074,262149,524296,1048577,
 2097154,4194305,8388608,16777217,33554434,
 67108869,134217728,268435457,536870914,1073741825,
 2147483648,4294967297,8589934594,17179869189]