n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 12 |
5 | -40 |
6 | 310 |
7 | -2331 |
8 | 22344 |
9 | -214992 |
10 | 2290138 |
11 | -26031115 |
12 | 322277780 |
13 | -4298532888 |
14 | 61722080446 |
15 | -947673715275 |
16 | 15499274051408 |
17 | -268866053899936 |
18 | 4930878490414002 |
19 | -95317757163840915 |
[0,0,2,-3,12,-40,310,-2331,22344,-214992,2290138, -26031115,322277780,-4298532888,61722080446, -947673715275,15499274051408,-268866053899936, 4930878490414002,-95317757163840915] |