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A003631 as a simple table

na(n)
12
23
37
413
517
623
737
843
947
1053
1167
1273
1383
1497
15103
16107
17113
18127
19137
20157
21163
22167
23173
24193
25197
26223
27227
28233
29257
30263
31277
32283
33293
34307
35313
36317
37337
38347
39353
40367
41373
42383
43397
44433
45443
46457
47463
48467
49487
50503
51523
52547
53557
54563
55577

[2,3,7,13,17,23,37,43,47,53,67,73,83,97,103,107,
 113,127,137,157,163,167,173,193,197,223,227,233,
 257,263,277,283,293,307,313,317,337,347,353,367,
 373,383,397,433,443,457,463,467,487,503,523,547,
 557,563,577]