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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 23 |
| 3 | 192329 |
| 4 | 192323192329192341 |
| 5 | 192323192329192339192323192329192341192323192329192399 |
[2,23,192329,192323192329192341, 19232319232919233919232319232919234119232319232919\ 2399] |