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A191018 as a simple table

na(n)
12
217
319
423
531
647
753
861
979
1083
11107
12109
13113
14137
15139
16151
17167
18173
19181
20197
21199
22211
23227
24229
25233
26241
27257
28263
29271
30293
31317
32331
33347
34349
35353
36379
37383
38409
39421
40439
41443
42467
43499
44503
45541
46557
47563
48571
49587
50593
51601
52617
53619
54631

[2,17,19,23,31,47,53,61,79,83,107,109,113,137,139,
 151,167,173,181,197,199,211,227,229,233,241,257,
 263,271,293,317,331,347,349,353,379,383,409,421,
 439,443,467,499,503,541,557,563,571,587,593,601,
 617,619,631]