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A197188 as a simple table

na(n)
12
25
37
411
513
617
731
841
943
1071
1189
12103
13109
14139
15173
16191
17197
18241
19281
20317
21443
22487
23569
24577
25701
26761
27797
28919
291009

[2,5,7,11,13,17,31,41,43,71,89,103,109,139,173,
 191,197,241,281,317,443,487,569,577,701,761,797,
 919,1009]