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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 176 |
| 3 | 265728 |
| 4 | 2199038984192 |
| 5 | 309485009821617747608469504 |
| 6 | 12259964326927110866866776295192695943928870296113643520 |
[8,176,265728,2199038984192, 309485009821617747608469504, 12259964326927110866866776295192695943928870296113\ 643520] |