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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 108 |
| 3 | 39924 |
| 4 | 168448464 |
| 5 | 7334262484992 |
| 6 | 3386694351039040512 |
| 7 | 10641273426523761445748736 |
| 8 | 340916846631327852552215693623296 |
| 9 | 114528491766510715239712268894889666674688 |
| 10 | 431116212874608758195979601409742939536338628640768 |
[3,108,39924,168448464,7334262484992, 3386694351039040512,10641273426523761445748736, 340916846631327852552215693623296, 114528491766510715239712268894889666674688, 43111621287460875819597960140974293953633862864076\ 8] |