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A139883 as a simple table

na(n)
131
243
367
4103
5151
6211
7283
8367
9463
10571
11691
12739
13751
14811
15823
16859
17919
18967
19991
201123
211171
221279
231291
241399
251447
261459
271471
281483
291531
301567
311627
321663
331699
341783
351831
361867
371879
381987
391999
402083
412179
422239
432311
442371
452383

[31,43,67,103,151,211,283,367,463,571,691,739,751,
 811,823,859,919,967,991,1123,1171,1279,1291,1399,
 1447,1459,1471,1483,1531,1567,1627,1663,1699,1783,
 1831,1867,1879,1987,1999,2083,2179,2239,2311,2371,
 2383]