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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 8192 |
| 3 | 854473 |
| 4 | 72544970 |
| 5 | 5190742489 |
| 6 | 323797652462 |
| 7 | 18095156337973 |
[64,8192,854473,72544970,5190742489,323797652462, 18095156337973] |