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A038942 as a simple table

na(n)
12
27
311
417
523
629
731
837
943
1053
1159
1267
1371
1479
1589
16101
17139
18151
19157
20173
21181
22191
23193
24211
25223
26227
27233
28251
29277
30281
31307
32311
33313
34331
35337
36349
37359
38373
39383
40389
41397
42401
43409
44419
45421
46433

[2,7,11,17,23,29,31,37,43,53,59,67,71,79,89,101,
 139,151,157,173,181,191,193,211,223,227,233,251,
 277,281,307,311,313,331,337,349,359,373,383,389,
 397,401,409,419,421,433]