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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 6 |
| 2 | 90 |
| 3 | 6750 |
| 4 | 2531250 |
| 5 | 4746093750 |
| 6 | 44494628906250 |
| 7 | 2085685729980468750 |
| 8 | 488832592964172363281250 |
| 9 | 572850694879889488220214843750 |
| 10 | 3356547040311852470040321350097656250 |
| 11 | 98336339071636302833212539553642272949218750 |
[2,6,90,6750,2531250,4746093750,44494628906250, 2085685729980468750,488832592964172363281250, 572850694879889488220214843750, 3356547040311852470040321350097656250, 98336339071636302833212539553642272949218750] |