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A215813 as a simple table

na(n)
12
23
35
413
517
629
737
841
953
1061
1189
1297
13113
14137
15157
16197
17281
18313
19349
20353
21397
22433
23457
24461
25509
26541
27557
28593
29613
30617
31661
32673
33809
34829
35857
36877
371061
381097

[2,3,5,13,17,29,37,41,53,61,89,97,113,137,157,197,
 281,313,349,353,397,433,457,461,509,541,557,593,
 613,617,661,673,809,829,857,877,1061,1097]