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A097517 as a simple table

na(n)
17
23
33
419
57
67
719
83
937
1031
1137
1261
133
143
157
1613
1767
18103
19331
2061
21193
2267
2343
243
25109
2631
27193
28151
2931
303
3119
327
3379
3413
35103
36151
37373
38181
3931
4079
4197
42151
43127
443
453
4679
473
4819
49457
507
51139
52271
5379
54709
5579
563
57283
587
59283
6013
6113
6273
6367
6413
65151
6637
67193
68337

[7,3,3,19,7,7,19,3,37,31,37,61,3,3,7,13,67,103,
 331,61,193,67,43,3,109,31,193,151,31,3,19,7,79,13,
 103,151,373,181,31,79,97,151,127,3,3,79,3,19,457,
 7,139,271,79,709,79,3,283,7,283,13,13,73,67,13,
 151,37,193,337]