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| n | a(n) |
|---|---|
| 1 | 3960 |
| 2 | 5220 |
| 3 | 1873080 |
| 4 | 6733440 |
| 5 | 8447040 |
| 6 | 18685336320 |
| 7 | 255306083760 |
| 8 | 341863562880 |
| 9 | 357274165248 |
| 10 | 765899971200 |
| 11 | 1018887932160 |
[3960,5220,1873080,6733440,8447040,18685336320, 255306083760,341863562880,357274165248, 765899971200,1018887932160] |