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| n | a(n) |
|---|---|
| 0 | 9 |
| 1 | 51 |
| 2 | 2403 |
| 3 | 5764803 |
| 4 | 33232930569603 |
| 5 | 1104427674243920646305299203 |
[9,51,2403,5764803,33232930569603, 1104427674243920646305299203] |