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A123856 as a simple table

na(n)
12
23
35
47
513
617
719
831
947
1059
1161
1271
13101
14103
15107
16109
17137
18149
19151
20157
21167
22181
23197
24211
25223
26227
27229
28269
29317
30337
31349
32353
33379
34383
35389
36401
37421
38439
39449
40457
41463
42479
43521
44523
45541
46547
47563
48569
49571
50587
51599
52613
53617
54631
55643

[2,3,5,7,13,17,19,31,47,59,61,71,101,103,107,109,
 137,149,151,157,167,181,197,211,223,227,229,269,
 317,337,349,353,379,383,389,401,421,439,449,457,
 463,479,521,523,541,547,563,569,571,587,599,613,
 617,631,643]