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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 27 |
| 6 | 739 |
| 7 | 546391 |
| 8 | 298543324411 |
| 9 | 89128116550480609893151 |
| 10 | 7943821159836055611643954282977557048699079331 |
| 11 | 63104294619459055797454850600852928915607093463575707111291209057699988334565551829102647591 |
[1,1,2,5,27,739,546391,298543324411, 89128116550480609893151, 7943821159836055611643954282977557048699079331, 63104294619459055797454850600852928915607093463575\ 707111291209057699988334565551829102647591] |