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A075089 as a simple table

na(n)
15
27
317
419
511
613
729
831
917
1019
1141
1243
1323
1473
15101
1653
17109
1829
1931
2097
2167
22103
2371
2437
25191
2679
2741
2843
2989
30181
3147
3297
33197
34101
35103
3653
37109
38331
39113
40229
4159
4261
43311
44127
45193
46131
4767
48137
49139
5071
5173
52149
53151
54229
55463
5679
57241
58163
5983
60337

[5,7,17,19,11,13,29,31,17,19,41,43,23,73,101,53,
 109,29,31,97,67,103,71,37,191,79,41,43,89,181,47,
 97,197,101,103,53,109,331,113,229,59,61,311,127,
 193,131,67,137,139,71,73,149,151,229,463,79,241,
 163,83,337]