n | a(n) |
---|---|
0 | 1 |
1 | -4 |
2 | -8 |
3 | -32 |
4 | -160 |
5 | -896 |
6 | -5376 |
7 | -33792 |
8 | -219648 |
9 | -1464320 |
10 | -9957376 |
11 | -68796416 |
12 | -481574912 |
13 | -3408068608 |
14 | -24343347200 |
15 | -175272099840 |
16 | -1270722723840 |
17 | -9268801044480 |
18 | -67971207659520 |
19 | -500840477491200 |
20 | -3706219533434880 |
[1,-4,-8,-32,-160,-896,-5376,-33792,-219648, -1464320,-9957376,-68796416,-481574912, -3408068608,-24343347200,-175272099840, -1270722723840,-9268801044480,-67971207659520, -500840477491200,-3706219533434880] |