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| n | a(n) |
|---|---|
| 1 | 169140971830859028 |
| 2 | 312535222687464777 |
| 3 | 464929563535070436 |
| 4 | 651817066348182933 |
[169140971830859028,312535222687464777, 464929563535070436,651817066348182933] |