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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | -6 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | -48 |
| 9 | 0 |
| 10 | 1 |
| 11 | 280 |
| 12 | 0 |
| 13 | -200 |
| 14 | 0 |
| 15 | 1 |
| 16 | 0 |
| 17 | 8640 |
| 18 | 0 |
| 19 | -600 |
| 20 | 0 |
| 21 | 1 |
| 22 | -52080 |
| 23 | 0 |
| 24 | 99960 |
| 25 | 0 |
| 26 | -1470 |
| 27 | 0 |
| 28 | 1 |
| 29 | 0 |
| 30 | -4300800 |
| 31 | 0 |
| 32 | 689920 |
| 33 | 0 |
| 34 | -3136 |
| 35 | 0 |
| 36 | 1 |
| 37 | 27651456 |
| 38 | 0 |
| 39 | -110557440 |
| 40 | 0 |
| 41 | 3429216 |
| 42 | 0 |
| 43 | -6048 |
| 44 | 0 |
| 45 | 1 |
[1,0,1,-6,0,1,0,-48,0,1,280,0,-200,0,1,0,8640,0, -600,0,1,-52080,0,99960,0,-1470,0,1,0,-4300800,0, 689920,0,-3136,0,1,27651456,0,-110557440,0, 3429216,0,-6048,0,1] |