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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 34 |
| 3 | 196418 |
| 4 | 37889062373143906 |
| 5 | 271964099255182923543922814194423915162591622175362 |
[1,2,34,196418,37889062373143906, 27196409925518292354392281419442391516259162217536\ 2] |