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A171517 as a simple table

na(n)
13
213
331
443
573
6109
7151
8163
9181
10193
11199
12211
13223
14283
15331
16349
17373
18379
19409
20421
21433
22463
23499
24541
25571
26601
27613
28619
29643
30709
31739
32769
33823
34829
35883
36991
371009
381021
391039
401051
411063
421129
431213
441231
451291
461303
471423
481453
491471
501549

[3,13,31,43,73,109,151,163,181,193,199,211,223,
 283,331,349,373,379,409,421,433,463,499,541,571,
 601,613,619,643,709,739,769,823,829,883,991,1009,
 1021,1039,1051,1063,1129,1213,1231,1291,1303,1423,
 1453,1471,1549]