n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 1 |
3 | -2 |
4 | 4 |
5 | -7 |
6 | 12 |
7 | -21 |
8 | 38 |
9 | -68 |
10 | 120 |
11 | -212 |
12 | 377 |
13 | -670 |
14 | 1188 |
15 | -2107 |
16 | 3740 |
17 | -6638 |
18 | 11778 |
19 | -20898 |
20 | 37084 |
21 | -65808 |
22 | 116775 |
23 | -207212 |
24 | 367696 |
25 | -652478 |
26 | 1157815 |
27 | -2054524 |
28 | 3645730 |
29 | -6469316 |
30 | 11479734 |
31 | -20370656 |
32 | 36147506 |
33 | -64143372 |
34 | 113821732 |
35 | -201975429 |
36 | 358403220 |
37 | -635982680 |
38 | 1128544452 |
39 | -2002589998 |
[1,-1,1,-2,4,-7,12,-21,38,-68,120,-212,377,-670, 1188,-2107,3740,-6638,11778,-20898,37084,-65808, 116775,-207212,367696,-652478,1157815,-2054524, 3645730,-6469316,11479734,-20370656,36147506, -64143372,113821732,-201975429,358403220, -635982680,1128544452,-2002589998] |