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A155143 as a simple table

na(n)
117
237
389
4107
5109
6197
7199
8233
9307
10397
11433
12449
13467
14487
15557
16593
17613
18647
19683
20701
21757
22809
23811
24883
25953
26991
271009
281061
291063
301097
311117
321151
331153
341259
351297
361459
371493
381511
391549
401601
411637
421657
431693
441747
451783
461889
471997

[17,37,89,107,109,197,199,233,307,397,433,449,467,
 487,557,593,613,647,683,701,757,809,811,883,953,
 991,1009,1061,1063,1097,1117,1151,1153,1259,1297,
 1459,1493,1511,1549,1601,1637,1657,1693,1747,1783,
 1889,1997]