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| n | a(n) |
|---|---|
| 1 | 68 |
| 2 | 17500 |
| 3 | 5053176 |
| 4 | 435034872 |
| 5 | 3079148398 |
| 6 | 107924794257 |
| 7 | 122918945808 |
[68,17500,5053176,435034872,3079148398, 107924794257,122918945808] |