n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | -4 |
3 | 10 |
4 | -30 |
5 | 102 |
6 | -376 |
7 | 1462 |
8 | -5900 |
9 | 24470 |
10 | -103644 |
11 | 446382 |
12 | -1948854 |
13 | 8605290 |
14 | -38362200 |
15 | 172423770 |
16 | -780496110 |
17 | 3554991270 |
18 | -16281079900 |
19 | 74927379550 |
20 | -346328465930 |
21 | 1607078948690 |
22 | -7483861047480 |
23 | 34963419415650 |
24 | -163825013554400 |
25 | 769694347677002 |
[1,2,-4,10,-30,102,-376,1462,-5900,24470,-103644, 446382,-1948854,8605290,-38362200,172423770, -780496110,3554991270,-16281079900,74927379550, -346328465930,1607078948690,-7483861047480, 34963419415650,-163825013554400,769694347677002] |