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A076557 as a simple table

na(n)
32
43
53
67
75
811
97
1019
115
125
137
1429
152
1637
177
1843
193
2017
2113
2219
235
2413
253
265
2719
2879
295
3083
313
3211
3313
347
3519
3623
375
385
392
4019
4123
42139
4337
44149
4519
4617
4741
487
4989
50179
5113
5217
5347
54197
55101
5623
5753
5871
59109
6017
6137
6211
6361
6419
6531
66251
6711
68269
69139
7031
7147
7241
737
7423
7519

[2,3,3,7,5,11,7,19,5,5,7,29,2,37,7,43,3,17,13,19,
 5,13,3,5,19,79,5,83,3,11,13,7,19,23,5,5,2,19,23,
 139,37,149,19,17,41,7,89,179,13,17,47,197,101,23,
 53,71,109,17,37,11,61,19,31,251,11,269,139,31,47,
 41,7,23,19]