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A191218 as a simple table

na(n)
15
213
317
429
537
641
745
853
961
1073
1189
1297
13101
14109
15113
16117
17137
18149
19153
20157
21173
22181
23193
24197
25229
26233
27241
28245
29257
30261
31269
32277
33281
34293
35313
36317
37325
38333
39337
40349
41353
42369
43373
44389
45397
46401
47405
48409
49421
50425
51433
52449
53457
54461
55477

[5,13,17,29,37,41,45,53,61,73,89,97,101,109,113,
 117,137,149,153,157,173,181,193,197,229,233,241,
 245,257,261,269,277,281,293,313,317,325,333,337,
 349,353,369,373,389,397,401,405,409,421,425,433,
 449,457,461,477]