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A189557 as a simple table

na(n)
15
27
313
419
541
643
759
873
9109
10113
11139
12181
13193
14227
15229
16239
17251
18281
19283
20293
21313
22331
23347
24349
25419
26461
27463
28467
29487
30523
31541
32557
33587
34601
35607
36617
37643
38653
39701
40773
41829
42863
43883
44919
45929
46977
471021
481033
491049
501061
511093
521109

[5,7,13,19,41,43,59,73,109,113,139,181,193,227,
 229,239,251,281,283,293,313,331,347,349,419,461,
 463,467,487,523,541,557,587,601,607,617,643,653,
 701,773,829,863,883,919,929,977,1021,1033,1049,
 1061,1093,1109]