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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 10 |
| 4 | 762 |
| 5 | 1876255 |
| 6 | 274382326290 |
| 7 | 3265588553925722827 |
| 8 | 4299566944396584777543664576 |
| 9 | 828675148077536475804944305151462053905 |
| 10 | 30068353582978459601855528390398866877243129478172220 |
[1,1,2,10,762,1876255,274382326290, 3265588553925722827,4299566944396584777543664576, 828675148077536475804944305151462053905, 30068353582978459601855528390398866877243129478172\ 220] |