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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 454 |
| 3 | 17776 |
| 4 | 461681 |
| 5 | 13259232 |
| 6 | 401608939 |
| 7 | 12030873701 |
| 8 | 357976038469 |
[1,454,17776,461681,13259232,401608939, 12030873701,357976038469] |