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A083706 as a simple table

na(n)
01
14
29
318
435
568
6133
7262
8519
91032
102057
114106
128203
1316396
1432781
1565550
16131087
17262160
18524305
191048594
202097171
214194324
228388629
2316777238
2433554455
2567108888
26134217753
27268435482
28536870939
291073741852
302147483677
314294967326
328589934623

[1,4,9,18,35,68,133,262,519,1032,2057,4106,8203,
 16396,32781,65550,131087,262160,524305,1048594,
 2097171,4194324,8388629,16777238,33554455,
 67108888,134217753,268435482,536870939,1073741852,
 2147483677,4294967326,8589934623]