n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | -3 |
4 | 8 |
5 | -40 |
6 | 256 |
7 | -1568 |
8 | 11108 |
9 | -96720 |
10 | 908836 |
11 | -9084108 |
12 | 101147408 |
13 | -1233325600 |
14 | 15998088016 |
15 | -221845635248 |
16 | 3301710539408 |
17 | -52192183735680 |
18 | 871157943761296 |
19 | -15360373687021488 |
20 | 285403775884452608 |
[1,0,1,-3,8,-40,256,-1568,11108,-96720,908836, -9084108,101147408,-1233325600,15998088016, -221845635248,3301710539408,-52192183735680, 871157943761296,-15360373687021488, 285403775884452608] |