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A228891 as a simple table

na(n)
12
23
35
47
513
613
717
817
917
1041
1159
1229
1341
1453
1537
1667
1779
1861
1989
20101
21139
2271
2367
2483
25151
26101
2789
28127
29163
30137
31101
32103
33131
34181
35139
36139
37181
38181
39139
40317
41191
42313
43163
44197
45199
46389
47191
48233
49229
50337
51239
52229
53347
54881
55239
56283
57487

[2,3,5,7,13,13,17,17,17,41,59,29,41,53,37,67,79,
 61,89,101,139,71,67,83,151,101,89,127,163,137,101,
 103,131,181,139,139,181,181,139,317,191,313,163,
 197,199,389,191,233,229,337,239,229,347,881,239,
 283,487]