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A393607 as a simple table

na(n)
12
23
33
45
55
62
77
87
95
103
1111
1211
1311
147
1519
1613
1713
1817
1911
2029
215
2217
2317
2423
2519
2659
2711
2813
2919
3019
3129
3223
3379
3417
3541
367
3723
3823
3941
4031
4189
4223
4383
4423
4517
4629
4729
4847
4943
50109
5129
5297
5331
5453
5519
5631
5731
5853
5947
60139
6141
62139
6347
6471
6529
6643
6737

[2,3,3,5,5,2,7,7,5,3,11,11,11,7,19,13,13,17,11,29,
 5,17,17,23,19,59,11,13,19,19,29,23,79,17,41,7,23,
 23,41,31,89,23,83,23,17,29,29,47,43,109,29,97,31,
 53,19,31,31,53,47,139,41,139,47,71,29,43,37]