n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 5 |
3 | -10 |
4 | 30 |
5 | -74 |
6 | 199 |
7 | -515 |
8 | 1355 |
9 | -3540 |
10 | 9276 |
11 | -24276 |
12 | 63565 |
13 | -166405 |
14 | 435665 |
15 | -1140574 |
16 | 2986074 |
17 | -7817630 |
18 | 20466835 |
19 | -53582855 |
20 | 140281751 |
21 | -367262376 |
22 | 961505400 |
23 | -2517253800 |
24 | 6590256025 |
25 | -17253514249 |
26 | 45170286749 |
27 | -118257345970 |
28 | 309601751190 |
29 | -810547907570 |
[1,-1,5,-10,30,-74,199,-515,1355,-3540,9276, -24276,63565,-166405,435665,-1140574,2986074, -7817630,20466835,-53582855,140281751,-367262376, 961505400,-2517253800,6590256025,-17253514249, 45170286749,-118257345970,309601751190, -810547907570] |