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A324573 as a simple table

na(n)
10
21
33
43
57
64
715
84
97
106
1131
127
1363
1413
1512
167
17127
186
19255
2012
2118
2218
23511
246
2515
2648
2712
2818
291023
308
312047
326
3339
3484
3528
3612
374095
38176
3954
408
418191
4212
4316383
4439
4515
46258
4732767
4812
4931
5013
51144
5254
5365535
548
5542
5612
57252
58800
59131071
6015
61262143
621302
6328
6412
6591
6620
67524287
68144
69528
7014
711048575
728
732097151
742736
7518

[0,1,3,3,7,4,15,4,7,6,31,7,63,13,12,7,127,6,255,
 12,18,18,511,6,15,48,12,18,1023,8,2047,6,39,84,28,
 12,4095,176,54,8,8191,12,16383,39,15,258,32767,12,
 31,13,144,54,65535,8,42,12,252,800,131071,15,
 262143,1302,28,12,91,20,524287,144,528,14,1048575,
 8,2097151,2736,18]