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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 91 |
| 3 | 17522596 |
| 4 | 1026148893131813787580921710841512880680110612545 |
[1,14,91,17522596, 1026148893131813787580921710841512880680110612545] |