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A176316 as a simple table

na(n)
12
23
311
429
547
659
771
883
9101
10131
11149
12167
13227
14257
15317
16347
17359
18383
19389
20479
21503
22563
23569
24587
25593
26683
27773
28839
29857
30881
31947
32983
331019
341091
351109
361187
371193
381229
391259
401319
411361
421499
431583
441613
451637
461697
471733
481823
491913
501931

[2,3,11,29,47,59,71,83,101,131,149,167,227,257,
 317,347,359,383,389,479,503,563,569,587,593,683,
 773,839,857,881,947,983,1019,1091,1109,1187,1193,
 1229,1259,1319,1361,1499,1583,1613,1637,1697,1733,
 1823,1913,1931]