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A078373 as a simple table

na(n)
12
23
37
419
527
697
7171
8231
9487
10763
111071
124011
136171
1410971
1517647
1647059
1799151
18117511
19202471
20260847
21481959
22963919
231564063
241805311
251993215
266991599
278400511
2811200681
2936791535
3046564287
31103359483
32206718967
33359502063

[2,3,7,19,27,97,171,231,487,763,1071,4011,6171,
 10971,17647,47059,99151,117511,202471,260847,
 481959,963919,1564063,1805311,1993215,6991599,
 8400511,11200681,36791535,46564287,103359483,
 206718967,359502063]