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A091738 as a simple table

na(n)
13
27
319
429
543
653
771
879
9101
10107
11131
12139
13163
14173
15193
16199
17229
18239
19263
20271
21293
22311
23337
24349
25373
26383
27409
28421
29443
30457
31479
32491
33521
34541
35569
36577
37601
38613
39641
40647
41673
42683
43719
44733
45757
46769
47809
48821
49839
50857
51881
52887
53929
54941

[3,7,19,29,43,53,71,79,101,107,131,139,163,173,
 193,199,229,239,263,271,293,311,337,349,373,383,
 409,421,443,457,479,491,521,541,569,577,601,613,
 641,647,673,683,719,733,757,769,809,821,839,857,
 881,887,929,941]