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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 144 |
| 3 | 6065280 |
| 4 | 4952179814400 |
| 5 | 1289512799941305139200 |
| 6 | 6762844700608770238252960972800 |
| 7 | 11470635634813395742481912276441576767488000 |
| 8 | 393736985584514548835738283681336315795223487793070080000 |
[1,144,6065280,4952179814400, 1289512799941305139200, 6762844700608770238252960972800, 11470635634813395742481912276441576767488000, 39373698558451454883573828368133631579522348779307\ 0080000] |