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A241987 as a simple table

na(n)
01
15
29
313
413
523
629
729
829
939
1039
1147
1261
1357
1451
1563
1673
1779
1881
1979
2083
2193
2287
2387
24105
2597
2695
27123
28121
29137
30129
31111
32125
33145
34131
35159
36153
37171
38161
39173

[1,5,9,13,13,23,29,29,29,39,39,47,61,57,51,63,73,
 79,81,79,83,93,87,87,105,97,95,123,121,137,129,
 111,125,145,131,159,153,171,161,173]