n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 12 |
5 | -40 |
6 | 118 |
7 | 21 |
8 | -5208 |
9 | 88416 |
10 | -904518 |
11 | 8456085 |
12 | -36204300 |
13 | -582795720 |
14 | 25175931870 |
15 | -566080291035 |
16 | 10469521737360 |
17 | -151909726765440 |
18 | 1439879949016050 |
19 | 12663393759659565 |
20 | -1154176350734965860 |
[0,0,2,-3,12,-40,118,21,-5208,88416,-904518, 8456085,-36204300,-582795720,25175931870, -566080291035,10469521737360,-151909726765440, 1439879949016050,12663393759659565, -1154176350734965860] |