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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | -3 |
| 5 | 6 |
| 6 | 6 |
| 7 | -36 |
| 8 | 36 |
| 9 | 0 |
| 10 | 120 |
| 11 | -360 |
| 12 | 240 |
| 13 | -60 |
| 14 | 0 |
| 15 | 1800 |
| 16 | -3600 |
| 17 | 1800 |
| 18 | 0 |
| 19 | -2520 |
| 20 | 0 |
| 21 | 25200 |
| 22 | -37800 |
| 23 | 15120 |
| 24 | 3360 |
| 25 | 0 |
| 26 | -70560 |
| 27 | 0 |
| 28 | 352800 |
| 29 | -423360 |
| 30 | 141120 |
| 31 | 0 |
| 32 | 241920 |
| 33 | 0 |
| 34 | -1693440 |
| 35 | 0 |
| 36 | 5080320 |
| 37 | -5080320 |
| 38 | 1451520 |
| 39 | -544320 |
| 40 | 0 |
| 41 | 10886400 |
| 42 | 0 |
| 43 | -38102400 |
| 44 | 0 |
| 45 | 76204800 |
| 46 | -65318400 |
| 47 | 16329600 |
[0,0,1,-3,6,6,-36,36,0,120,-360,240,-60,0,1800, -3600,1800,0,-2520,0,25200,-37800,15120,3360,0, -70560,0,352800,-423360,141120,0,241920,0, -1693440,0,5080320,-5080320,1451520,-544320,0, 10886400,0,-38102400,0,76204800,-65318400, 16329600] |