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A181686 as a simple table

na(n)
12
213
319
431
583
6101
7103
8137
9157
10191
11223
12229
13277
14317
15349
16367
17409
18449
19571
20601
21631
22661
23691
24701
25739
26743
27827
28997
291187
301193
311259
321291
331307
341327
351423
361447
371553
381693
391699
401723
411741
421753
431759
441871
451877
461987
472011
482063
492081

[2,13,19,31,83,101,103,137,157,191,223,229,277,
 317,349,367,409,449,571,601,631,661,691,701,739,
 743,827,997,1187,1193,1259,1291,1307,1327,1423,
 1447,1553,1693,1699,1723,1741,1753,1759,1871,1877,
 1987,2011,2063,2081]