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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | -16 |
| 5 | 5 |
| 6 | 1 |
| 7 | 0 |
| 8 | 5256 |
| 9 | -3068 |
| 10 | 276 |
| 11 | 32 |
| 12 | 0 |
| 13 | 2070720 |
| 14 | 2367420 |
| 15 | -912150 |
| 16 | 53220 |
| 17 | 3510 |
| 18 | 0 |
| 19 | -36031524480 |
| 20 | 15327895296 |
| 21 | -40587120 |
| 22 | -387492840 |
| 23 | 21414120 |
| 24 | 758184 |
| 25 | 840 |
| 26 | -212459319878400 |
| 27 | -75473246681280 |
| 28 | 38182549456800 |
| 29 | -2562251680800 |
| 30 | -195611371200 |
| 31 | 13639812480 |
| 32 | 285616800 |
| 33 | 453600 |
[0,1,0,-16,5,1,0,5256,-3068,276,32,0,2070720, 2367420,-912150,53220,3510,0,-36031524480, 15327895296,-40587120,-387492840,21414120,758184, 840,-212459319878400,-75473246681280, 38182549456800,-2562251680800,-195611371200, 13639812480,285616800,453600] |