The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -5 |
| 2 | -21 |
| 3 | 1315 |
| 4 | 10605 |
| 5 | -1275125 |
| 6 | -15407721 |
| 7 | 2623245235 |
| 8 | 42259931385 |
| 9 | -9261089476325 |
| 10 | -186491316534621 |
| 11 | 49956768769529155 |
| 12 | 1207179246757084965 |
| 13 | -382176418283068128725 |
| 14 | -10774275008170461687921 |
| 15 | 3935761043383637776069075 |
| 16 | 126807469437927682997343345 |
[1,-5,-21,1315,10605,-1275125,-15407721, 2623245235,42259931385,-9261089476325, -186491316534621,49956768769529155, 1207179246757084965,-382176418283068128725, -10774275008170461687921, 3935761043383637776069075, 126807469437927682997343345] |