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A176985 as a simple table

na(n)
12
211
317
453
559
671
7101
8107
9149
10167
11233
12239
13251
14257
15293
16347
17383
18419
19431
20491
21503
22509
23521
24563
25617
26653
27701
28743
29761
30941
311049
321061
331151
341193
351223
361229
371283
381319
391373
401409
411427
421481
431511
441553
451571
461601
471607
481733

[2,11,17,53,59,71,101,107,149,167,233,239,251,257,
 293,347,383,419,431,491,503,509,521,563,617,653,
 701,743,761,941,1049,1061,1151,1193,1223,1229,
 1283,1319,1373,1409,1427,1481,1511,1553,1571,1601,
 1607,1733]