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A339004 as a simple table

na(n)
121
239
357
487
591
6111
7129
8133
9159
10183
11203
12213
13237
14247
15259
16267
17301
18303
19321
20339
21371
22377
23393
24417
25427
26453
27481
28489
29497
30519
31543
32551
33553
34559
35579
36597
37623
38669
39687
40689
41703
42707
43717
44749
45753
46789
47791
48793
49813
50817
51843
52879
53917

[21,39,57,87,91,111,129,133,159,183,203,213,237,
 247,259,267,301,303,321,339,371,377,393,417,427,
 453,481,489,497,519,543,551,553,559,579,597,623,
 669,687,689,703,707,717,749,753,789,791,793,813,
 817,843,879,917]