The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | -2 |
| 4 | 19 |
| 5 | -79 |
| 6 | 76 |
| 7 | 2640 |
| 8 | -36945 |
| 9 | 329371 |
| 10 | -1861949 |
| 11 | -4438774 |
| 12 | 355714228 |
| 13 | -7292531180 |
| 14 | 109844527612 |
| 15 | -1277006731104 |
| 16 | 8181112825231 |
| 17 | 124379387459175 |
| 18 | -6806984421310187 |
| 19 | 191750786928500050 |
| 20 | -4289244423048443149 |
| 21 | 80163499107525756105 |
| 22 | -1146313133241947091420 |
| 23 | 5494990440819210736560 |
[1,1,-1,-2,19,-79,76,2640,-36945,329371,-1861949, -4438774,355714228,-7292531180,109844527612, -1277006731104,8181112825231,124379387459175, -6806984421310187,191750786928500050, -4289244423048443149,80163499107525756105, -1146313133241947091420,5494990440819210736560] |