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A121595 as a simple table

na(n)
15
27
35
411
513
617
77
829
97
1037
1119
1247
13119
1441
1523
165
1729
1831
1911
2037
2137
2241
2343
2471
2513
267
2713
2813
2947
3013
3149
327
337
347
3553
365
3779
3859
3997
4061
4171
42103
4367
4417
4571
4661
4773
48139
4917
5017
5179
5219
5319
5419
5583
5619
57151
5889
5929
6029
61263
6297

[5,7,5,11,13,17,7,29,7,37,19,47,119,41,23,5,29,31,
 11,37,37,41,43,71,13,7,13,13,47,13,49,7,7,7,53,5,
 79,59,97,61,71,103,67,17,71,61,73,139,17,17,79,19,
 19,19,83,19,151,89,29,29,263,97]