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A068192 as a simple table

na(n)
12
23
35
47
511
613
717
819
931
1029
1123
1241
1343
1437
1589
1659
1753
1867
1979
2071
21137
22109
23239
24167
25199
2647
2783
2897
2961
30373
31101
32179
33193
34131
35151
3673
37263
38593
39139
40113
41157
42103
43241
44181
45397
46233
47617
48311
49191
50229
51271
52269
53127
54223
55331
56337
57211
58163

[2,3,5,7,11,13,17,19,31,29,23,41,43,37,89,59,53,
 67,79,71,137,109,239,167,199,47,83,97,61,373,101,
 179,193,131,151,73,263,593,139,113,157,103,241,
 181,397,233,617,311,191,229,271,269,127,223,331,
 337,211,163]