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A274987 as a simple table

na(n)
13
25
37
411
513
617
723
831
937
1053
1159
1261
1373
1479
1583
1689
17101
18103
19109
20127
21137
22139
23149
24173
25179
26193
27223
28229
29257
30263
31293
32307
33313
34337
35347
36349
37359
38367
39389
40397
41409
42419
43439
44449
45461
46467
47487
48491
49521
50547
51571
52577
53599
54601
55619
56631

[3,5,7,11,13,17,23,31,37,53,59,61,73,79,83,89,101,
 103,109,127,137,139,149,173,179,193,223,229,257,
 263,293,307,313,337,347,349,359,367,389,397,409,
 419,439,449,461,467,487,491,521,547,571,577,599,
 601,619,631]