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A084721 as a simple table

na(n)
12
25
35
411
511
611
711
817
917
1023
1123
1223
1323
1429
1529
1637
1737
1837
1937
2037
2137
2247
2347
2447
2547
2653
2753
2859
2959
3059
3159
3267
3367
3467
3567
3673
3773
3879
3979
4079
4179
4289
4389
4489
4589
4689
4789
4897
4997
50101
51101
52107
53107
54107
55107
56113
57113
58127
59127
60127
61127
62127
63127
64127
65127

[2,5,5,11,11,11,11,17,17,23,23,23,23,29,29,37,37,
 37,37,37,37,47,47,47,47,53,53,59,59,59,59,67,67,
 67,67,73,73,79,79,79,79,89,89,89,89,89,89,97,97,
 101,101,107,107,107,107,113,113,127,127,127,127,
 127,127,127,127]