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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 122 |
| 4 | 4104 |
| 5 | 306749 |
| 6 | 50525365 |
| 7 | 18384693920 |
| 8 | 14778226489840 |
| 9 | 26250644316475949 |
| 10 | 103046989939554094945 |
| 11 | 893993929233158179056828 |
[1,8,122,4104,306749,50525365,18384693920, 14778226489840,26250644316475949, 103046989939554094945,893993929233158179056828] |