The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -6 |
| 2 | 192 |
| 3 | -14704 |
| 4 | 2058624 |
| 5 | -457982720 |
| 6 | 148443124736 |
| 7 | -66066559066112 |
| 8 | 38672430452342784 |
| 9 | -28812765976119148544 |
| 10 | 26627757204719641296896 |
| 11 | -29895731887419723149213696 |
| 12 | 40082507396600200285753704448 |
[1,-6,192,-14704,2058624,-457982720,148443124736, -66066559066112,38672430452342784, -28812765976119148544,26627757204719641296896, -29895731887419723149213696, 40082507396600200285753704448] |