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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3138428376721 |
| 2 | 12855002631049216 |
| 3 | 1667889514952984961 |
| 4 | 52654090776777588736 |
| 5 | 766217865410400390625 |
| 6 | 6831675453247426400256 |
| 7 | 43439888521963583647921 |
| 8 | 215671155821681003462656 |
| 9 | 886384871716129280658801 |
[0,3138428376721,12855002631049216, 1667889514952984961,52654090776777588736, 766217865410400390625,6831675453247426400256, 43439888521963583647921,215671155821681003462656, 886384871716129280658801] |