The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | -391 |
| 3 | -18352 |
| 4 | -247503 |
| 5 | -1792074 |
| 6 | -8306135 |
| 7 | -20866436 |
| 8 | 80141153 |
| 9 | 1970527202 |
| 10 | 24937424601 |
| 11 | 282953722920 |
| 12 | 3133268596369 |
| 13 | 34512107644558 |
| 14 | 379729172536457 |
| 15 | 4177209726056276 |
| 16 | 45949661144095425 |
| 17 | 505446909911417274 |
[1,10,-391,-18352,-247503,-1792074,-8306135, -20866436,80141153,1970527202,24937424601, 282953722920,3133268596369,34512107644558, 379729172536457,4177209726056276, 45949661144095425,505446909911417274] |