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A108334 as a simple table

na(n)
17
213
317
423
529
631
741
847
971
1083
11101
12107
13137
14157
15169
16193
17197
18217
19221
20223
21259
22301
23347
24373
25389
26391
27403
28427
29437
30469
31491
32497
33511
34527
35559
36563
37581
38587
39613
40631
41653
42673
43679
44683
45689
46701
47703
48727
49743
50749
51757
52799
53827
54833
55857
56893
57899
58907
59917

[7,13,17,23,29,31,41,47,71,83,101,107,137,157,169,
 193,197,217,221,223,259,301,347,373,389,391,403,
 427,437,469,491,497,511,527,559,563,581,587,613,
 631,653,673,679,683,689,701,703,727,743,749,757,
 799,827,833,857,893,899,907,917]