n | a(n) |
---|---|
0 | 0 |
1 | -2 |
2 | -2 |
3 | -3 |
4 | -24 |
5 | 30 |
6 | -1584 |
7 | 18648 |
8 | -417024 |
9 | 9009792 |
10 | -234809280 |
11 | 6704112096 |
12 | -213138355968 |
13 | 7406611617600 |
14 | -280001933761536 |
15 | 11429619375628800 |
16 | -501128794469154816 |
17 | 23484526696292281344 |
18 | -1171437744670467637248 |
19 | 61965733479803762540544 |
[0,-2,-2,-3,-24,30,-1584,18648,-417024,9009792, -234809280,6704112096,-213138355968,7406611617600, -280001933761536,11429619375628800, -501128794469154816,23484526696292281344, -1171437744670467637248,61965733479803762540544] |