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A166109 as a simple table

na(n)
15
27
317
423
537
653
7157
8163
9173
10193
11227
12233
13257
14263
15283
16353
17383
18397
19457
20487
21523
22557
23563
24607
25677
26683
27733
28787
29823
30857
31863
32877
33947
34983
35997
361033
371097
381117
391153
401187
411193
421237
431277
441283
451297
461307
471423
481433
491447
501453

[5,7,17,23,37,53,157,163,173,193,227,233,257,263,
 283,353,383,397,457,487,523,557,563,607,677,683,
 733,787,823,857,863,877,947,983,997,1033,1097,
 1117,1153,1187,1193,1237,1277,1283,1297,1307,1423,
 1433,1447,1453]