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A163666 as a simple table

na(n)
12
25
347
4107
51613
65653
721557
8230047
9821603
108145173
1147073007
1268939141
1376040521
14196388147
15240595631
16433046543
171085166671
182269551127
194670405591
209784786813
21104484802043
22420065905307
23474962067289
242616252796471
255804170333301

[2,5,47,107,1613,5653,21557,230047,821603,8145173,
 47073007,68939141,76040521,196388147,240595631,
 433046543,1085166671,2269551127,4670405591,
 9784786813,104484802043,420065905307,474962067289,
 2616252796471,5804170333301]