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A181428 as a simple table

na(n)
16
29
313
417
519
623
725
833
937
1039
1147
1247
1349
1457
1565
1667
1769
1877
1977
2081
2189
2293
23103
24109
25107
26109
27113
28115
29131
30145
31141
32145
33151
34161
35159
36169
37173
38177
39185
40187
41193
42203
43199
44203
45213
46235
47239
48233
49235
50243
51247
52253
53267
54269
55275
56277
57279
58287
59287
60295
61317
62325
63317
64319
65335
66351
67353

[6,9,13,17,19,23,25,33,37,39,47,47,49,57,65,67,69,
 77,77,81,89,93,103,109,107,109,113,115,131,145,
 141,145,151,161,159,169,173,177,185,187,193,203,
 199,203,213,235,239,233,235,243,247,253,267,269,
 275,277,279,287,287,295,317,325,317,319,335,351,
 353]