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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 64 |
| 4 | 968 |
| 5 | 28832 |
| 6 | 1671872 |
| 7 | 188562024 |
| 8 | 41430463144 |
| 9 | 17723539378064 |
| 10 | 14763059454475880 |
| 11 | 23944611669892140680 |
| 12 | 75620272070369667245120 |
| 13 | 465017414868882102745479712 |
| 14 | 5568018952998142584614666404696 |
[2,8,64,968,28832,1671872,188562024,41430463144, 17723539378064,14763059454475880, 23944611669892140680,75620272070369667245120, 465017414868882102745479712, 5568018952998142584614666404696] |