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A100347 as a simple table

na(n)
01
11
21
33
43
515
63
763
821
9125
1036
111023
1225
134095
14314
153357
16987
1765535
18207
19262143
202782
21164498
2217114
234194303
241705
2511349545
26119620
277256527
28209376
29268435455
301261
311073741823
322178309
33276465135
345687872
358460492865
36114575
3768719476735

[1,1,1,3,3,15,3,63,21,125,36,1023,25,4095,314,
 3357,987,65535,207,262143,2782,164498,17114,
 4194303,1705,11349545,119620,7256527,209376,
 268435455,1261,1073741823,2178309,276465135,
 5687872,8460492865,114575,68719476735]