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A106928 as a simple table

na(n)
12
223
353
471
5107
6149
7197
8239
9263
10281
11317
12389
13443
14491
15557
16569
17599
18641
19653
20683
21827
22953
23977
241031
251061
261163
271289
281439
291451
301481
311499
321523
331607
341619
351667
361709
371787
381871
391877
401901
412069
422111
432129
442153
452213

[2,23,53,71,107,149,197,239,263,281,317,389,443,
 491,557,569,599,641,653,683,827,953,977,1031,1061,
 1163,1289,1439,1451,1481,1499,1523,1607,1619,1667,
 1709,1787,1871,1877,1901,2069,2111,2129,2153,2213]