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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 49 |
| 3 | 1849 |
| 4 | 18496 |
| 5 | 103184964 |
| 6 | 7383508103184964 |
| 7 | 544680602158273835081031849649 |
[9,49,1849,18496,103184964,7383508103184964, 544680602158273835081031849649] |