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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 134 |
| 4 | 3653 |
| 5 | 168051 |
| 6 | 14569771 |
| 7 | 2280994876 |
| 8 | 658322110177 |
| 9 | 351724619629025 |
| 10 | 348538706870343133 |
| 11 | 641870813261257824216 |
[1,8,134,3653,168051,14569771,2280994876, 658322110177,351724619629025,348538706870343133, 641870813261257824216] |