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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | -8 |
| 6 | 0 |
| 7 | 224 |
| 8 | 0 |
| 9 | -11024 |
| 10 | 8064 |
| 11 | 893024 |
| 12 | -1419264 |
| 13 | -108056024 |
| 14 | 262662400 |
| 15 | 18196891712 |
| 16 | -59455492096 |
| 17 | -4073700728096 |
| 18 | 16726941245440 |
| 19 | 1171230240813632 |
| 20 | -5792855942807552 |
| 21 | -420783754605743528 |
[1,0,0,0,0,-8,0,224,0,-11024,8064,893024,-1419264, -108056024,262662400,18196891712,-59455492096, -4073700728096,16726941245440,1171230240813632, -5792855942807552,-420783754605743528] |