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A341447 as a simple table

na(n)
13
27
313
415
519
629
733
837
943
1051
1153
1261
1369
1471
1575
1677
1779
1889
1993
20101
21107
22113
23119
24123
25131
26139
27141
28151
29161
30163
31165
32173
33177
34181
35193
36199
37201
38217
39219
40221
41223
42229
43239
44249
45251
46255
47263
48271
49281
50287
51291
52293
53299
54309
55311
56317

[3,7,13,15,19,29,33,37,43,51,53,61,69,71,75,77,79,
 89,93,101,107,113,119,123,131,139,141,151,161,163,
 165,173,177,181,193,199,201,217,219,221,223,229,
 239,249,251,255,263,271,281,287,291,293,299,309,
 311,317]