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A106870 as a simple table

na(n)
17
213
319
431
537
643
767
873
979
1097
11103
12127
13139
14151
15157
16163
17181
18193
19199
20211
21223
22229
23241
24271
25277
26283
27307
28313
29349
30367
31373
32379
33397
34409
35421
36439
37457
38463
39487
40499
41523
42541
43571
44577
45601
46607
47613
48619
49631
50643
51661
52673
53709
54727

[7,13,19,31,37,43,67,73,79,97,103,127,139,151,157,
 163,181,193,199,211,223,229,241,271,277,283,307,
 313,349,367,373,379,397,409,421,439,457,463,487,
 499,523,541,571,577,601,607,613,619,631,643,661,
 673,709,727]