The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | -4047 |
| 3 | -531098 |
| 4 | -16774815 |
| 5 | -244123818 |
| 6 | -2176664687 |
| 7 | -13840463658 |
| 8 | -68713711935 |
| 9 | -282389182874 |
| 10 | -999717524751 |
| 11 | -3136451049978 |
| 12 | -8902259161055 |
| 13 | -23201196112074 |
| 14 | -56015689302447 |
| 15 | -124998776380682 |
| 16 | -248242046141055 |
[1,6,-4047,-531098,-16774815,-244123818, -2176664687,-13840463658,-68713711935, -282389182874,-999717524751,-3136451049978, -8902259161055,-23201196112074,-56015689302447, -124998776380682,-248242046141055] |