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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 35904 |
| 4 | 15246792 |
| 5 | 1655292672 |
| 6 | 76076470272 |
| 7 | 1938889332864 |
| 8 | 31986077222088 |
| 9 | 379828874574336 |
| 10 | 3467936329482240 |
| 11 | 25688670889758912 |
| 12 | 159542832418562208 |
| 13 | 857641217296165632 |
| 14 | 4062186698349846528 |
[1,0,0,35904,15246792,1655292672,76076470272, 1938889332864,31986077222088,379828874574336, 3467936329482240,25688670889758912, 159542832418562208,857641217296165632, 4062186698349846528] |