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A273283 as a simple table

na(n)
22
33
42
55
63
77
82
93
105
1111
123
1313
145
155
162
1717
183
1919
203
215
225
2323
243
255
267
273
285
2929
305
3131
322
337
347
357
363
3737
387
397
403
4141
425
4343
445
455
467
4747
483
497
505
5111
525
5353
543
5511
563
5711
5811
5959
603
6161
6211
635
642
6511
665
6767
685
6911
705
7171
723
7373
7411
755
765
7711
785
7979
803
813
8211

[2,3,2,5,3,7,2,3,5,11,3,13,5,5,2,17,3,19,3,5,5,23,
 3,5,7,3,5,29,5,31,2,7,7,7,3,37,7,7,3,41,5,43,5,5,
 7,47,3,7,5,11,5,53,3,11,3,11,11,59,3,61,11,5,2,11,
 5,67,5,11,5,71,3,73,11,5,5,11,5,79,3,3,11]