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A068885 as a simple table

na(n)
11
23
39
413
531
643
7143
8167
9185
10215
111141
121321
13231
14763
153277
163517
177289
188009
1924787
2026587
2127847
2229431
23332021
24355781
25365681
26382841
27394721
28413201
292949827
303157727
31643003
32665179
333417371
343535181
353616031
363782351
371279777
383956371
394046461

[1,3,9,13,31,43,143,167,185,215,1141,1321,231,763,
 3277,3517,7289,8009,24787,26587,27847,29431,
 332021,355781,365681,382841,394721,413201,2949827,
 3157727,643003,665179,3417371,3535181,3616031,
 3782351,1279777,3956371,4046461]