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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 0 |
| 3 | 16 |
| 4 | 32 |
| 5 | 1344 |
| 6 | -5120 |
| 7 | 968192 |
| 8 | 13138944 |
| 9 | 6377617408 |
| 10 | -245871738880 |
| 11 | 376093809229824 |
| 12 | 44307874417573888 |
| 13 | 199959909725932814336 |
| 14 | -70241187753472205783040 |
| 15 | 956261367126518476707463168 |
[1,2,0,16,32,1344,-5120,968192,13138944, 6377617408,-245871738880,376093809229824, 44307874417573888,199959909725932814336, -70241187753472205783040, 956261367126518476707463168] |