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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 105 |
| 4 | 6105 |
| 5 | 6105765 |
| 6 | 3761057654628 |
| 7 | 291937610576546289190956 |
[1,10,105,6105,6105765,3761057654628, 291937610576546289190956] |