n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -2 |
3 | 3 |
4 | 4 |
5 | -90 |
6 | 786 |
7 | -5670 |
8 | 34784 |
9 | -136584 |
10 | -824760 |
11 | 33137280 |
12 | -633666648 |
13 | 10089623544 |
14 | -145675230960 |
15 | 1910939579640 |
16 | -21215723677440 |
17 | 136130901474240 |
18 | 2280768466608576 |
19 | -135531682778927808 |
20 | 4380044490023909760 |
21 | -119144344839822570240 |
[1,1,-2,3,4,-90,786,-5670,34784,-136584,-824760, 33137280,-633666648,10089623544,-145675230960, 1910939579640,-21215723677440,136130901474240, 2280768466608576,-135531682778927808, 4380044490023909760,-119144344839822570240] |