The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | -167 |
| 4 | 289 |
| 5 | -30799 |
| 6 | 7624865 |
| 7 | -327166135 |
| 8 | 29995758529 |
| 9 | -7060555404191 |
| 10 | 991934013190081 |
| 11 | -177889548504511175 |
| 12 | 51940497621294961121 |
| 13 | -14246314907147632709615 |
| 14 | 4386830634217402797858657 |
[1,1,1,-167,289,-30799,7624865,-327166135, 29995758529,-7060555404191,991934013190081, -177889548504511175,51940497621294961121, -14246314907147632709615, 4386830634217402797858657] |