n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 1 |
4 | -4 |
5 | 26 |
6 | -212 |
7 | 2108 |
8 | -24720 |
9 | 334072 |
10 | -5112544 |
11 | 87396728 |
12 | -1650607040 |
13 | 34132685120 |
14 | -767025716736 |
15 | 18612106195456 |
16 | -485013257865472 |
17 | 13509071081429888 |
18 | -400505695457942528 |
19 | 12592502771190979712 |
20 | -418524228123134068224 |
[1,1,0,1,-4,26,-212,2108,-24720,334072,-5112544, 87396728,-1650607040,34132685120,-767025716736, 18612106195456,-485013257865472,13509071081429888, -400505695457942528,12592502771190979712, -418524228123134068224] |