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A029974 as a simple table

na(n)
12
23
35
47
537
643
761
867
9191
10197
111297
121627
131663
141699
151741
161777
171999
182143
192221
202293
212551
226521
236779
247001
257109
267151
277187
287331
297481
307517
317703
3247521
3347737
3449069
3549537
3651517
3752201
3854181
3955987
4057751
4159083

[2,3,5,7,37,43,61,67,191,197,1297,1627,1663,1699,
 1741,1777,1999,2143,2221,2293,2551,6521,6779,7001,
 7109,7151,7187,7331,7481,7517,7703,47521,47737,
 49069,49537,51517,52201,54181,55987,57751,59083]