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A129758 as a simple table

na(n)
13
23
35
47
511
67
717
817
919
1031
1129
1219
1341
1447
1547
1643
1761
1859
1967
2061
2159
2271
2367
2489
2597
26101
2779
2889
29103
30113
31107
32127
33131
34139
35151
36127
37137
38167
39167
40163
41149
42163
43167
44157
45199
46163
47197
48181
49227
50227
51211
52239
53251
54257
55257
56229
57271
58269

[3,3,5,7,11,7,17,17,19,31,29,19,41,47,47,43,61,59,
 67,61,59,71,67,89,97,101,79,89,103,113,107,127,
 131,139,151,127,137,167,167,163,149,163,167,157,
 199,163,197,181,227,227,211,239,251,257,257,229,
 271,269]