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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1296 |
| 3 | 2985984000000 |
| 4 | 416336312719673760153600000000 |
| 5 | 39594086612242519324387557078266845776303882240000000000 |
| 6 | 16363214235219603423192858350259453436046713251360764276842772299776000000000000000000000000 |
[1,1296,2985984000000, 416336312719673760153600000000, 39594086612242519324387557078266845776303882240000\ 000000, 16363214235219603423192858350259453436046713251360\ 764276842772299776000000000000000000000000] |