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A260793 as a simple table

na(n)
13
211
317
419
543
683
789
897
9113
10137
11139
12163
13193
14211
15233
16241
17283
18307
19313
20331
21347
22353
23379
24401
25409
26419
27433
28443
29491
30499
31523
32547
33569
34587
35601
36617
37619
38641
39643
40673
41811
42827
43859
44881
45929
46947
47953
48977
491009
501019
511033
521049
531051

[3,11,17,19,43,83,89,97,113,137,139,163,193,211,
 233,241,283,307,313,331,347,353,379,401,409,419,
 433,443,491,499,523,547,569,587,601,617,619,641,
 643,673,811,827,859,881,929,947,953,977,1009,1019,
 1033,1049,1051]