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A069689 as a simple table

na(n)
12
25
317
423
529
641
747
853
971
10131
11191
12227
13233
14257
15281
16293
17347
18359
19389
20401
21419
22431
23479
24503
25521
26557
27593
28599
29653
30659
31677
32683
33701
34761
35797
36827
37857
38887
39953
40977
411091
421097
431109
441151
451181
461187
471193
481223
491283
501307
511373

[2,5,17,23,29,41,47,53,71,131,191,227,233,257,281,
 293,347,359,389,401,419,431,479,503,521,557,593,
 599,653,659,677,683,701,761,797,827,857,887,953,
 977,1091,1097,1109,1151,1181,1187,1193,1223,1283,
 1307,1373]