The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | -4 |
| 1 | 60 |
| 2 | -1384 |
| 3 | 50520 |
| 4 | -1963564 |
| 5 | -2440620 |
| 6 | 24774209456 |
| 7 | -7410634833360 |
| 8 | 1946918835205676 |
| 9 | -504022869697607700 |
| 10 | 125734569960701153096 |
| 11 | -25506896972028634763640 |
| 12 | -308739978510619283180284 |
[-4,60,-1384,50520,-1963564,-2440620,24774209456, -7410634833360,1946918835205676, -504022869697607700,125734569960701153096, -25506896972028634763640, -308739978510619283180284] |