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| n | a(n) |
|---|---|
| 1 | 114566336 |
| 2 | 222273709440 |
| 3 | 449274384195312 |
| 4 | 920635927293402816 |
| 5 | 1897470427514439403464 |
| 6 | 3920972890172486310882016 |
[114566336,222273709440,449274384195312, 920635927293402816,1897470427514439403464, 3920972890172486310882016] |