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A168031 as a simple table

na(n)
12
25
37
411
547
689
797
8113
9163
10227
11283
12367
13373
14431
15439
16503
17643
18823
19877
20887
21941
22991
231013
241049
251093
261303
271327
281439
291523
301567
311609
321879
331901
341949
351951
361993
372113
382179
392221
402347
412399
422411
432477
442503
452591
462689
472711
482797

[2,5,7,11,47,89,97,113,163,227,283,367,373,431,
 439,503,643,823,877,887,941,991,1013,1049,1093,
 1303,1327,1439,1523,1567,1609,1879,1901,1949,1951,
 1993,2113,2179,2221,2347,2399,2411,2477,2503,2591,
 2689,2711,2797]