n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | -12 |
5 | 60 |
6 | -450 |
7 | 2940 |
8 | -20720 |
9 | 155232 |
10 | -1186920 |
11 | 9474960 |
12 | -74648376 |
13 | 552593184 |
14 | -3012161152 |
15 | -10103577120 |
16 | 836086634240 |
17 | -22797582691456 |
18 | 523741123519296 |
19 | -11502212537522304 |
20 | 251821773466887808 |
[1,0,0,0,-12,60,-450,2940,-20720,155232,-1186920, 9474960,-74648376,552593184,-3012161152, -10103577120,836086634240,-22797582691456, 523741123519296,-11502212537522304, 251821773466887808] |