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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1536 |
| 5 | 122880 |
| 6 | 10813440 |
| 7 | 1348730880 |
| 8 | 261070258176 |
| 9 | 81787921367040 |
| 10 | 42364317235937280 |
| 11 | 36686317873382031360 |
| 12 | 53408511909378681470976 |
| 13 | 131046345314766385022238720 |
| 14 | 542471805171085602081503969280 |
| 15 | 3789399960645715708906355231293440 |
[0,0,0,1536,122880,10813440,1348730880, 261070258176,81787921367040,42364317235937280, 36686317873382031360,53408511909378681470976, 131046345314766385022238720, 542471805171085602081503969280, 3789399960645715708906355231293440] |