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| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 624 |
| 3 | 15524 |
| 4 | 381628 |
| 5 | 9550720 |
| 6 | 238863948 |
| 7 | 5954344678 |
| 8 | 148566446596 |
[25,624,15524,381628,9550720,238863948,5954344678, 148566446596] |