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| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 38464 |
| 3 | 34166592 |
| 4 | 99952737952 |
| 5 | 1694940245504992 |
| 6 | 98104220374911288448 |
[256,38464,34166592,99952737952,1694940245504992, 98104220374911288448] |