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A146317 as a simple table

na(n)
15
23
323
417
511
65
73
889
979
1067
1159
1253
1343
1437
1523
1619
1717
185
19163
20139
21103
2279
2373
2413
253
262
27257
28239
29227
30191
31179
32173
33137
34113
3589
3671
3759
3853
3947
4029
4123
4217
433
44367
45347
46281
47277
48269
49257
50241
51239
52229
53197
54179
55157
56149
57131
58127
59109
60107
61101
6271
6361

[5,3,23,17,11,5,3,89,79,67,59,53,43,37,23,19,17,5,
 163,139,103,79,73,13,3,2,257,239,227,191,179,173,
 137,113,89,71,59,53,47,29,23,17,3,367,347,281,277,
 269,257,241,239,229,197,179,157,149,131,127,109,
 107,101,71,61]