n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -2 |
3 | 0 |
4 | -3 |
5 | 3 |
6 | 0 |
7 | -4 |
8 | 12 |
9 | 0 |
10 | 0 |
11 | -5 |
12 | 35 |
13 | 0 |
14 | -30 |
15 | 0 |
16 | -6 |
17 | 90 |
18 | 0 |
19 | -360 |
20 | 180 |
21 | 0 |
22 | -7 |
23 | 217 |
24 | 0 |
25 | -2730 |
26 | 3150 |
27 | -630 |
28 | 0 |
29 | -8 |
30 | 504 |
31 | 0 |
32 | -16800 |
33 | 33600 |
34 | -15120 |
35 | 0 |
36 | 0 |
37 | -9 |
38 | 1143 |
39 | 0 |
40 | -91854 |
41 | 283500 |
42 | -215460 |
43 | 0 |
44 | 22680 |
45 | 0 |
46 | -10 |
47 | 2550 |
48 | 0 |
49 | -466200 |
50 | 2085300 |
51 | -2381400 |
52 | 0 |
53 | 907200 |
54 | -226800 |
[1,0,-2,0,-3,3,0,-4,12,0,0,-5,35,0,-30,0,-6,90,0, -360,180,0,-7,217,0,-2730,3150,-630,0,-8,504,0, -16800,33600,-15120,0,0,-9,1143,0,-91854,283500, -215460,0,22680,0,-10,2550,0,-466200,2085300, -2381400,0,907200,-226800] |