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A034302 as a simple table

na(n)
123
237
353
473
5113
6131
7137
8173
9179
10197
11311
12317
13431
14617
15719
161499
171997
182239
192293
203137
214919
226173
237433
249677
2519973
2623833
2726833
2847933
2973331
3074177
3191733
3293491
3394397
34111731
35166931
36333911
37355933
38477797
39477977

[23,37,53,73,113,131,137,173,179,197,311,317,431,
 617,719,1499,1997,2239,2293,3137,4919,6173,7433,
 9677,19973,23833,26833,47933,73331,74177,91733,
 93491,94397,111731,166931,333911,355933,477797,
 477977]