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A066464 as a simple table

na(n)
01
13
25
37
413
517
632
738
885
967
10162
11137
12338
13203
14760
15247
161225
17472
18578
19682
201012
21787
229112
231463
242048
252047
262888
272363
285513
293465
305512
316682
328978
335197
3417672
355198
3671442
379653
3829768
398662
4040898
4113513
4281608
4315593
44131072
4535437

[1,3,5,7,13,17,32,38,85,67,162,137,338,203,760,
 247,1225,472,578,682,1012,787,9112,1463,2048,2047,
 2888,2363,5513,3465,5512,6682,8978,5197,17672,
 5198,71442,9653,29768,8662,40898,13513,81608,
 15593,131072,35437]