n | a(n) |
---|---|
0 | 1 |
1 | -3 |
2 | 2 |
3 | -3 |
4 | 6 |
5 | -14 |
6 | 36 |
7 | -99 |
8 | 286 |
9 | -858 |
10 | 2652 |
11 | -8398 |
12 | 27132 |
13 | -89148 |
14 | 297160 |
15 | -1002915 |
16 | 3421710 |
17 | -11785890 |
18 | 40940460 |
19 | -143291610 |
20 | 504932340 |
21 | -1790214660 |
22 | 6382504440 |
23 | -22870640910 |
24 | 82334307276 |
25 | -297670187844 |
26 | 1080432533656 |
27 | -3935861372604 |
28 | 14386251913656 |
[1,-3,2,-3,6,-14,36,-99,286,-858,2652,-8398,27132, -89148,297160,-1002915,3421710,-11785890,40940460, -143291610,504932340,-1790214660,6382504440, -22870640910,82334307276,-297670187844, 1080432533656,-3935861372604,14386251913656] |