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A147754 as a simple table

na(n)
01
13
21
35
43
51
61
79
85
91
103
111
121
1315
141
151
169
171
185
193
201
211
223
2325
241
259
261
271
2815
291
301
313
321
335
349
351
361
373
385
391
403
411
421
4345
441
451
463
471
4825
493
501

[1,3,1,5,3,1,1,9,5,1,3,1,1,15,1,1,9,1,5,3,1,1,3,
 25,1,9,1,1,15,1,1,3,1,5,9,1,1,3,5,1,3,1,1,45,1,1,
 3,1,25,3,1]