n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 0 |
3 | 6 |
4 | 0 |
5 | -2 |
6 | -24 |
7 | 0 |
8 | 24 |
9 | 0 |
10 | 120 |
11 | 0 |
12 | -240 |
13 | 0 |
14 | 24 |
15 | -720 |
16 | 0 |
17 | 2400 |
18 | 0 |
19 | -720 |
20 | 0 |
21 | 5040 |
22 | 0 |
23 | -25200 |
24 | 0 |
25 | 15120 |
26 | 0 |
27 | -720 |
28 | -40320 |
29 | 0 |
30 | 282240 |
31 | 0 |
32 | -282240 |
33 | 0 |
34 | 40320 |
35 | 0 |
36 | 362880 |
37 | 0 |
38 | -3386880 |
39 | 0 |
40 | 5080320 |
41 | 0 |
42 | -1451520 |
43 | 0 |
44 | 40320 |
45 | -3628800 |
46 | 0 |
47 | 43545600 |
48 | 0 |
49 | -91445760 |
50 | 0 |
51 | 43545600 |
52 | 0 |
[1,-2,0,6,0,-2,-24,0,24,0,120,0,-240,0,24,-720,0, 2400,0,-720,0,5040,0,-25200,0,15120,0,-720,-40320, 0,282240,0,-282240,0,40320,0,362880,0,-3386880,0, 5080320,0,-1451520,0,40320,-3628800,0,43545600,0, -91445760,0,43545600,0] |