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A105881 as a simple table

na(n)
12
27
311
419
523
631
743
847
959
1071
1179
1283
13107
14127
15131
16139
17163
18167
19179
20191
21199
22211
23223
24227
25239
26251
27263
28283
29311
30331
31347
32359
33379
34383
35419
36443
37463
38467
39479
40487
41503
42563
43571
44587
45599
46607
47631
48647
49659
50691
51719
52739
53743
54751
55811
56823
57827

[2,7,11,19,23,31,43,47,59,71,79,83,107,127,131,
 139,163,167,179,191,199,211,223,227,239,251,263,
 283,311,331,347,359,379,383,419,443,463,467,479,
 487,503,563,571,587,599,607,631,647,659,691,719,
 739,743,751,811,823,827]