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A270951 as a simple table

na(n)
11
27
317
423
531
641
747
871
973
1079
1189
1297
13103
14113
15127
16137
17151
18167
19169
20191
21193
22199
23223
24233
25239
26241
27257
28263
29271
30281
31311
32313
33337
34353
35359
36367
37383
38385
39401
40409
41431
42433
43439
44449
45457
46463
47479
48487
49503
50521
51569
52577
53593
54599
55601
56607
57617
58631
59641
60647
61673
62719
63727
64743

[1,7,17,23,31,41,47,71,73,79,89,97,103,113,127,
 137,151,167,169,191,193,199,223,233,239,241,257,
 263,271,281,311,313,337,353,359,367,383,385,401,
 409,431,433,439,449,457,463,479,487,503,521,569,
 577,593,599,601,607,617,631,641,647,673,719,727,
 743]