login

A191028 as a simple table

na(n)
13
27
313
417
523
629
737
847
953
1059
1167
1273
13107
14109
15137
16173
17179
18181
19191
20199
21211
22227
23233
24239
25263
26269
27271
28293
29307
30311
31313
32317
33331
34353
35359
36367
37373
38379
39421
40457
41463
42479
43503
44509
45523
46547
47563
48577
49593
50617
51631
52647
53659
54661

[3,7,13,17,23,29,37,47,53,59,67,73,107,109,137,
 173,179,181,191,199,211,227,233,239,263,269,271,
 293,307,311,313,317,331,353,359,367,373,379,421,
 457,463,479,503,509,523,547,563,577,593,617,631,
 647,659,661]