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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -9 |
| 3 | -28 |
| 4 | 9 |
| 5 | -126 |
| 6 | 252 |
| 7 | -344 |
| 8 | -9 |
| 9 | 28 |
| 10 | 1134 |
| 11 | -1332 |
| 12 | -252 |
| 13 | -2198 |
| 14 | 3096 |
| 15 | 3528 |
| 16 | 9 |
| 17 | -4914 |
| 18 | -252 |
| 19 | -6860 |
| 20 | -1134 |
| 21 | 9632 |
| 22 | 11988 |
| 23 | -12168 |
| 24 | 252 |
| 25 | 126 |
| 26 | 19782 |
| 27 | -28 |
| 28 | -3096 |
| 29 | -24390 |
| 30 | -31752 |
| 31 | -29792 |
| 32 | -9 |
| 33 | 37296 |
| 34 | 44226 |
| 35 | 43344 |
| 36 | 252 |
| 37 | -50654 |
| 38 | 61740 |
| 39 | 61544 |
| 40 | 1134 |
| 41 | -68922 |
| 42 | -86688 |
| 43 | -79508 |
| 44 | -11988 |
| 45 | -3528 |
[1,-9,-28,9,-126,252,-344,-9,28,1134,-1332,-252, -2198,3096,3528,9,-4914,-252,-6860,-1134,9632, 11988,-12168,252,126,19782,-28,-3096,-24390, -31752,-29792,-9,37296,44226,43344,252,-50654, 61740,61544,1134,-68922,-86688,-79508,-11988, -3528] |