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A009571 as a simple table

na(n)
12
23
35
47
513
617
731
831
943
1059
1173
1283
13101
14137
15149
16157
17197
18197
19227
20257
21293
22307
23367
24383
25421
26463
27509
28557
29577
30653
31677
32703
33757
34877
35907
36967
37997
381061
391091
401193
411229
421297
431373
441447
451483
461601
471643
481723
491811
501949
511987
522027
532213

[2,3,5,7,13,17,31,31,43,59,73,83,101,137,149,157,
 197,197,227,257,293,307,367,383,421,463,509,557,
 577,653,677,703,757,877,907,967,997,1061,1091,
 1193,1229,1297,1373,1447,1483,1601,1643,1723,1811,
 1949,1987,2027,2213]