n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -1 |
3 | 3 |
4 | -8 |
5 | 20 |
6 | -34 |
7 | -126 |
8 | 2514 |
9 | -28008 |
10 | 285774 |
11 | -2922810 |
12 | 30858048 |
13 | -339954264 |
14 | 3920819748 |
15 | -47319853140 |
16 | 596005041852 |
17 | -7799132781792 |
18 | 105344546511684 |
19 | -1454910026870412 |
20 | 20242465245436128 |
21 | -276289562032117200 |
22 | 3490199850169557480 |
[1,0,-1,3,-8,20,-34,-126,2514,-28008,285774, -2922810,30858048,-339954264,3920819748, -47319853140,596005041852,-7799132781792, 105344546511684,-1454910026870412, 20242465245436128,-276289562032117200, 3490199850169557480] |