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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 78 |
| 3 | 378 |
| 4 | 1378 |
| 5 | 91378 |
| 6 | 7791378 |
| 7 | 707914378 |
| 8 | 3270729214378 |
| 9 | 183270773294214378 |
| 10 | 1783270773268946226147378 |
[7,78,378,1378,91378,7791378,707914378, 3270729214378,183270773294214378, 1783270773268946226147378] |