The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | -7 |
| 3 | -917 |
| 4 | -7183 |
| 5 | 3803987 |
| 6 | 316369129 |
| 7 | -40892465221 |
| 8 | -12655402122271 |
| 9 | 1539257113273507 |
| 10 | 1652188971379360217 |
| 11 | 198029913991075323147 |
| 12 | -231213557728594141960239 |
| 13 | -76270663840340687485107213 |
[1,3,-7,-917,-7183,3803987,316369129,-40892465221, -12655402122271,1539257113273507, 1652188971379360217,198029913991075323147, -231213557728594141960239, -76270663840340687485107213] |