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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 8464 |
| 3 | 3356150 |
| 4 | 1501795009 |
| 5 | 655816458528 |
| 6 | 287247245656900 |
| 7 | 125713947023634648 |
| 8 | 55023794225718350400 |
| 9 | 24082627794060829296632 |
| 10 | 10540437995119428253155204 |
| 11 | 4613311988802182362231992512 |
[8,8464,3356150,1501795009,655816458528, 287247245656900,125713947023634648, 55023794225718350400,24082627794060829296632, 10540437995119428253155204, 4613311988802182362231992512] |