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A185267 as a simple table

na(n)
12
23
35
47
511
6131
7171
8191
9232
10292
11313
12373
13414
14434
15474
16535
17595
18616
19676
20717
21737
22797
23838
24898
25979
26101
2710301
2810701
2910901
3011311
3112721
32131
3313731
3413931
3514941
36151
3715751
3816361
3916761
4017371
4117971
42181
43191
4419391
4519791
461991
472112
4822322

[2,3,5,7,11,131,171,191,232,292,313,373,414,434,
 474,535,595,616,676,717,737,797,838,898,979,101,
 10301,10701,10901,11311,12721,131,13731,13931,
 14941,151,15751,16361,16761,17371,17971,181,191,
 19391,19791,1991,2112,22322]