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A038912 as a simple table

na(n)
12
23
311
437
541
647
753
861
971
1079
1183
1289
13101
14103
15113
16137
17151
18167
19179
20181
21191
22193
23197
24211
25223
26227
27229
28233
29239
30241
31269
32277
33283
34307
35317
36331
37337
38349
39359
40367
41373
42379
43383
44409
45431

[2,3,11,37,41,47,53,61,71,79,83,89,101,103,113,
 137,151,167,179,181,191,193,197,211,223,227,229,
 233,239,241,269,277,283,307,317,331,337,349,359,
 367,373,379,383,409,431]