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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | -24 |
| 4 | -224 |
| 5 | 320 |
| 6 | 76032 |
| 7 | 2165632 |
| 8 | 23343104 |
| 9 | -1474043904 |
| 10 | -127160524800 |
| 11 | -5452094095360 |
| 12 | -48051108446208 |
| 13 | 17669269569961984 |
| 14 | 2144050100688125952 |
| 15 | 144303119119098839040 |
| 16 | 2287457902532063395840 |
[0,1,0,-24,-224,320,76032,2165632,23343104, -1474043904,-127160524800,-5452094095360, -48051108446208,17669269569961984, 2144050100688125952,144303119119098839040, 2287457902532063395840] |