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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 360 |
| 5 | 15624 |
| 6 | 575280 |
| 7 | 19355400 |
| 8 | 624983184 |
| 9 | 19756767240 |
| 10 | 617202347472 |
| 11 | 19153654203240 |
| 12 | 592124427966096 |
| 13 | 18264762693276552 |
| 14 | 562673517711950736 |
| 15 | 17321016136718789352 |
| 16 | 532966801486271706576 |
| 17 | 16395167381657872458888 |
[0,0,0,360,15624,575280,19355400,624983184, 19756767240,617202347472,19153654203240, 592124427966096,18264762693276552, 562673517711950736,17321016136718789352, 532966801486271706576,16395167381657872458888] |