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A044971 as a simple table

na(n)
13
211
315
419
521
635
747
851
959
1061
1165
1269
1373
1475
15107
16143
17155
18159
19179
20185
21187
22197
23209
24213
25221
26223
27227
28231
29235
30237
31323
32431
33467
34479
35483
36539
37557
38563
39565
40593
41629
42641
43645
44665
45671
46673
47683
48695
49699

[3,11,15,19,21,35,47,51,59,61,65,69,73,75,107,143,
 155,159,179,185,187,197,209,213,221,223,227,231,
 235,237,323,431,467,479,483,539,557,563,565,593,
 629,641,645,665,671,673,683,695,699]