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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -1 |
| 3 | 2 |
| 4 | -2 |
| 5 | -1 |
| 6 | 9 |
| 7 | -20 |
| 8 | 20 |
| 9 | 24 |
| 10 | -150 |
| 11 | 327 |
| 12 | -293 |
| 13 | -599 |
| 14 | 3097 |
| 15 | -6452 |
| 16 | 4854 |
| 17 | 15878 |
| 18 | -71252 |
| 19 | 140112 |
| 20 | -81328 |
| 21 | -437346 |
| 22 | 1746254 |
| 23 | -3214989 |
| 24 | 1223971 |
| 25 | 12345295 |
| 26 | -44552833 |
| 27 | 76242173 |
| 28 | -11292089 |
| 29 | -354175849 |
| 30 | 1167638037 |
| 31 | -1842585992 |
| 32 | -233903034 |
| 33 | 10273377388 |
| 34 | -31169512310 |
[1,0,-1,2,-2,-1,9,-20,20,24,-150,327,-293,-599, 3097,-6452,4854,15878,-71252,140112,-81328, -437346,1746254,-3214989,1223971,12345295, -44552833,76242173,-11292089,-354175849, 1167638037,-1842585992,-233903034,10273377388, -31169512310] |