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A049546 as a simple table

na(n)
12
27
317
423
531
641
747
873
979
1089
1197
12103
13137
14151
15167
16191
17193
18199
19223
20233
21241
22257
23263
24271
25311
26313
27353
28359
29367
30383
31401
32409
33431
34433
35439
36457
37479
38487
39503
40521
41569
42577
43593
44599
45601
46607
47631
48641
49647
50673
51719
52727
53751
54761

[2,7,17,23,31,41,47,73,79,89,97,103,137,151,167,
 191,193,199,223,233,241,257,263,271,311,313,353,
 359,367,383,401,409,431,433,439,457,479,487,503,
 521,569,577,593,599,601,607,631,641,647,673,719,
 727,751,761]