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A324865 as a simple table

na(n)
10
20
31
41
53
61
77
81
96
104
1115
121
1331
141
158
169
1763
181
19127
201
2121
2215
23255
241
2516
2619
2710
2813
29511
3011
311023
321
3320
3447
3522
3613
372047
381
3978
4017
414095
421
438191
441
4514
46287
4716383
481
4936
506
51122
521
5332767
541
5555
561
57270
58277
5965535
601
61131071
62687
6322
6441
6558
6627
67262143
6845
69260
701
71524287
7217
731048575
74259
7516

[0,0,1,1,3,1,7,1,6,4,15,1,31,1,8,9,63,1,127,1,21,
 15,255,1,16,19,10,13,511,11,1023,1,20,47,22,13,
 2047,1,78,17,4095,1,8191,1,14,287,16383,1,36,6,
 122,1,32767,1,55,1,270,277,65535,1,131071,687,22,
 41,58,27,262143,45,260,1,524287,17,1048575,259,16]