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A136060 as a simple table

na(n)
13
27
313
431
537
643
761
873
9103
10163
11211
12223
13241
14271
15307
16313
17331
18367
19397
20421
21463
22523
23541
24577
25643
26727
27757
28853
29877
30883
31937
321051
331087
341093
351153
361237
371291
381303
391381
401423
411471
421597
431693
441723
451777
461951
471993
482131
492161
502203

[3,7,13,31,37,43,61,73,103,163,211,223,241,271,
 307,313,331,367,397,421,463,523,541,577,643,727,
 757,853,877,883,937,1051,1087,1093,1153,1237,1291,
 1303,1381,1423,1471,1597,1693,1723,1777,1951,1993,
 2131,2161,2203]