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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 80 |
| 3 | 33614 |
| 4 | 202099373 |
| 5 | 40280549372 |
| 6 | 430995495889374 |
| 7 | 77405340617896874 |
[16,80,33614,202099373,40280549372, 430995495889374,77405340617896874] |