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A343908 as a simple table

na(n)
12
27
319
411
537
617
789
823
973
10149
1197
1241
13127
1447
15239
16163
17181
18431
1971
20359
21223
2283
23419
24271
25101
26307
27107
28967
29113
30569
31131
32397
331237
34421
352239
36457
371103
38167
39839
40523
41541
42547
43577
44197
451777
46601
471481
48227
493863
50233
513499
522633
53727
54757
551289
561319
57811
581901
59281
601409

[2,7,19,11,37,17,89,23,73,149,97,41,127,47,239,
 163,181,431,71,359,223,83,419,271,101,307,107,967,
 113,569,131,397,1237,421,2239,457,1103,167,839,
 523,541,547,577,197,1777,601,1481,227,3863,233,
 3499,2633,727,757,1289,1319,811,1901,281,1409]