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A140556 as a simple table

na(n)
12
25
311
417
523
629
741
847
953
1059
1167
1271
1383
1489
15101
16107
17109
18113
19131
20137
21149
22151
23167
24173
25179
26191
27193
28197
29199
30211
31227
32233
33239
34251
35257
36263
37269
38277
39281
40293
41311
42313
43317
44331
45347
46353
47359
48367
49383
50389
51397
52401
53419
54431
55443

[2,5,11,17,23,29,41,47,53,59,67,71,83,89,101,107,
 109,113,131,137,149,151,167,173,179,191,193,197,
 199,211,227,233,239,251,257,263,269,277,281,293,
 311,313,317,331,347,353,359,367,383,389,397,401,
 419,431,443]