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A248173 as a simple table

na(n)
13
25
311
417
523
629
741
847
953
1071
1189
12101
13107
14113
15131
16137
17149
18167
19173
20191
21197
22233
23239
24251
25257
26263
27269
28281
29293
30311
31317
32347
33353
34359
35383
36389
37401
38431
39449
40461
41467
42479
43491
44503
45509
46521
47557
48563
49569
50587
51593
52599
53617
54641
55647

[3,5,11,17,23,29,41,47,53,71,89,101,107,113,131,
 137,149,167,173,191,197,233,239,251,257,263,269,
 281,293,311,317,347,353,359,383,389,401,431,449,
 461,467,479,491,503,509,521,557,563,569,587,593,
 599,617,641,647]