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A201630 as a simple table

na(n)
02
17
211
325
447
597
6191
7385
8767
91537
103071
116145
1212287
1324577
1449151
1598305
16196607
17393217
18786431
191572865
203145727
216291457
2212582911
2325165825
2450331647
25100663297
26201326591
27402653185
28805306367
291610612737
303221225471
316442450945
3212884901887

[2,7,11,25,47,97,191,385,767,1537,3071,6145,12287,
 24577,49151,98305,196607,393217,786431,1572865,
 3145727,6291457,12582911,25165825,50331647,
 100663297,201326591,402653185,805306367,
 1610612737,3221225471,6442450945,12884901887]