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A331544 as a simple table

na(n)
12
27
313
419
531
641
759
871
983
10101
11109
12131
13139
14151
15163
16179
17193
18199
19223
20229
21241
22257
23269
24281
25311
26337
27349
28373
29383
30401
31421
32433
33443
34461
35487
36503
37523
38547
39563
40571
41593
42601
43613
44619
45641
46659
47677
48709
49727
50739
51757
52773
53797
54811
55823

[2,7,13,19,31,41,59,71,83,101,109,131,139,151,163,
 179,193,199,223,229,241,257,269,281,311,337,349,
 373,383,401,421,433,443,461,487,503,523,547,563,
 571,593,601,613,619,641,659,677,709,727,739,757,
 773,797,811,823]