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A278494 as a simple table

na(n)
12
25
37
413
517
623
729
831
937
1047
1161
1279
1389
1497
15101
16103
17109
18113
19127
20157
21167
22193
23197
24199
25223
26229
27241
28257
29269
30271
31281
32293
33313
34317
35337
36353
37359
38383
39389
40397
41401
42409
43421
44433
45439
46449
47461
48463
49487
50509
51541
52569
53577
54593
55601
56607
57631
58647
59653
60673
61677
62709
63719
64727
65751
66761
67769
68773
69797

[2,5,7,13,17,23,29,31,37,47,61,79,89,97,101,103,
 109,113,127,157,167,193,197,199,223,229,241,257,
 269,271,281,293,313,317,337,353,359,383,389,397,
 401,409,421,433,439,449,461,463,487,509,541,569,
 577,593,601,607,631,647,653,673,677,709,719,727,
 751,761,769,773,797]