n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -5 |
3 | -15 |
4 | 165 |
5 | 630 |
6 | -8151 |
7 | -33780 |
8 | 474045 |
9 | 2052495 |
10 | -30206330 |
11 | -134392230 |
12 | 2040588775 |
13 | 9248893360 |
14 | -143569282680 |
15 | -659546365020 |
16 | 10407737293965 |
17 | 48303692377425 |
18 | -771991701692175 |
19 | -3611789245335285 |
20 | 58311219888996170 |
21 | 274581478640096340 |
[1,1,-5,-15,165,630,-8151,-33780,474045,2052495, -30206330,-134392230,2040588775,9248893360, -143569282680,-659546365020,10407737293965, 48303692377425,-771991701692175,-3611789245335285, 58311219888996170,274581478640096340] |