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A191071 as a simple table

na(n)
13
27
313
417
529
659
779
889
997
10101
11103
12113
13131
14137
15139
16163
17173
18179
19191
20197
21199
22211
23241
24263
25269
26277
27281
28307
29313
30317
31331
32337
33347
34349
35359
36367
37383
38397
39401
40431
41433
42443
43457
44461
45479
46491
47499
48503
49509
50521
51541
52547
53569
54587

[3,7,13,17,29,59,79,89,97,101,103,113,131,137,139,
 163,173,179,191,197,199,211,241,263,269,277,281,
 307,313,317,331,337,347,349,359,367,383,397,401,
 431,433,443,457,461,479,491,499,503,509,521,541,
 547,569,587]