n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 0 |
3 | -2 |
4 | 12 |
5 | -32 |
6 | 72 |
7 | 152 |
8 | -3808 |
9 | 48448 |
10 | -333440 |
11 | 289408 |
12 | 26461952 |
13 | -393649024 |
14 | 4126861312 |
15 | -34249082624 |
16 | -93963415552 |
17 | 12871254335488 |
18 | -272828216803328 |
19 | 2591959365570560 |
20 | 6130847346393088 |
[0,1,0,-2,12,-32,72,152,-3808,48448,-333440, 289408,26461952,-393649024,4126861312, -34249082624,-93963415552,12871254335488, -272828216803328,2591959365570560, 6130847346393088] |