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A007643 as a simple table

na(n)
141
243
353
459
567
671
783
889
997
10103
11107
12109
13113
14131
15137
16149
17151
18157
19163
20167
21173
22181
23191
24193
25197
26199
27223
28233
29251
30257
31263
32271
33277
34281
35283
36293
37307
38311
39313
40317
41331
42337
43347
44349
45353
46359
47367
48373
49379
50383
51389

[41,43,53,59,67,71,83,89,97,103,107,109,113,131,
 137,149,151,157,163,167,173,181,191,193,197,199,
 223,233,251,257,263,271,277,281,283,293,307,311,
 313,317,331,337,347,349,353,359,367,373,379,383,
 389]