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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 5 |
| 6 | 0 |
| 7 | -16 |
| 8 | -42 |
| 9 | -35 |
| 10 | 0 |
| 11 | 144 |
| 12 | 404 |
| 13 | 420 |
| 14 | 175 |
| 15 | 0 |
| 16 | -768 |
| 17 | -2288 |
| 18 | -2684 |
| 19 | -1540 |
| 20 | -385 |
| 21 | 0 |
| 22 | 1061376 |
| 23 | 3327584 |
| 24 | 4252248 |
| 25 | 2862860 |
| 26 | 1051050 |
| 27 | 175175 |
| 28 | 0 |
| 29 | -552960 |
| 30 | -1810176 |
| 31 | -2471456 |
| 32 | -1849848 |
| 33 | -820820 |
| 34 | -210210 |
| 35 | -25025 |
| 36 | 0 |
| 37 | 200005632 |
| 38 | 679395072 |
| 39 | 978649472 |
| 40 | 792548432 |
| 41 | 397517120 |
| 42 | 125925800 |
| 43 | 23823800 |
| 44 | 2127125 |
[1,0,-1,0,2,5,0,-16,-42,-35,0,144,404,420,175,0, -768,-2288,-2684,-1540,-385,0,1061376,3327584, 4252248,2862860,1051050,175175,0,-552960,-1810176, -2471456,-1849848,-820820,-210210,-25025,0, 200005632,679395072,978649472,792548432,397517120, 125925800,23823800,2127125] |