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A074074 as a simple table

na(n)
15
221
333
417
5105
6105
7189
833
9105
10405
11333
12141
13473
1457
15817
16189
17325
18885
1977
201425
211173
221925
231425
242301
25101
26105
271425
28333
29777
301785
312525
32381
331785
34405
35141
363393
372261
383813
396045
402717
414389
423129
432093
446765
45885
465513
47189
486045
49197
508085

[5,21,33,17,105,105,189,33,105,405,333,141,473,57,
 817,189,325,885,77,1425,1173,1925,1425,2301,101,
 105,1425,333,777,1785,2525,381,1785,405,141,3393,
 2261,3813,6045,2717,4389,3129,2093,6765,885,5513,
 189,6045,197,8085]