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A296920 as a simple table

na(n)
13
25
323
431
537
647
753
859
967
1071
1189
1297
13103
14113
15137
16157
17163
18179
19181
20191
21199
22223
23229
24251
25257
26269
27311
28313
29317
30331
31353
32367
33379
34383
35389
36397
37401
38419
39421
40433
41443
42449
43463
44467
45487
46499
47509
48521
49577
50587
51599
52617
53619
54631
55641
56643
57647
58653
59661
60683
61691
62709
63719

[3,5,23,31,37,47,53,59,67,71,89,97,103,113,137,
 157,163,179,181,191,199,223,229,251,257,269,311,
 313,317,331,353,367,379,383,389,397,401,419,421,
 433,443,449,463,467,487,499,509,521,577,587,599,
 617,619,631,641,643,647,653,661,683,691,709,719]