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A208643 as a simple table

na(n)
11
23
35
47
511
611
713
816
917
1019
1123
1223
1329
1429
1529
1631
1737
1837
1937
2041
2141
2243
2347
2447
2553
2653
2753
2859
2959
3059
3161
3264
3367
3467
3571
3671
3773
3879
3979
4079
4183
4283
4389
4489
4589
4697
4797
4897
4997
50101
51101
52103
53107
54107
55109
56113
57113
58127
59127
60127

[1,3,5,7,11,11,13,16,17,19,23,23,29,29,29,31,37,
 37,37,41,41,43,47,47,53,53,53,59,59,59,61,64,67,
 67,71,71,73,79,79,79,83,83,89,89,89,97,97,97,97,
 101,101,103,107,107,109,113,113,127,127,127]