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A081765 as a simple table

na(n)
11
27
313
419
531
637
749
855
961
1067
1185
1291
13109
14121
15127
16139
17157
18175
19181
20193
21199
22211
23217
24235
25247
26265
27289
28301
29307
30313
31319
32325
33337
34379
35391
36397
37409
38415
39445
40451
41469
42487
43499
44517
45535
46541
47571
48577
49589
50595
51631
52667
53679
54685
55691

[1,7,13,19,31,37,49,55,61,67,85,91,109,121,127,
 139,157,175,181,193,199,211,217,235,247,265,289,
 301,307,313,319,325,337,379,391,397,409,415,445,
 451,469,487,499,517,535,541,571,577,589,595,631,
 667,679,685,691]