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A112857 as a simple table

na(n)
01
11
21
31
43
51
61
77
85
91
101
1115
1217
137
141
151
1631
1749
1831
199
201
211
2263
23129
24111
2549
2611
271
281
29127
30321
31351
32209
3371
3413
351
361
37255
38769
391023
40769
41351
4297
4315
441
451
46511
471793
482815
492561
501471
51545
52127
5317
541
551
561023
574097
587423
597937
605503
612561
62799
63161
6419
651

[1,1,1,1,3,1,1,7,5,1,1,15,17,7,1,1,31,49,31,9,1,1,
 63,129,111,49,11,1,1,127,321,351,209,71,13,1,1,
 255,769,1023,769,351,97,15,1,1,511,1793,2815,2561,
 1471,545,127,17,1,1,1023,4097,7423,7937,5503,2561,
 799,161,19,1]