n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 1 |
4 | 0 |
5 | 0 |
6 | 4 |
7 | -5 |
8 | 0 |
9 | 16 |
10 | -40 |
11 | 25 |
12 | 64 |
13 | -240 |
14 | 300 |
15 | 131 |
16 | -1280 |
17 | 2400 |
18 | -976 |
19 | -5775 |
20 | 16000 |
21 | -15904 |
22 | -18220 |
23 | 92875 |
24 | -143616 |
25 | 6640 |
26 | 462600 |
27 | -1038839 |
28 | 744640 |
29 | 1817200 |
30 | -6468356 |
31 | 8172755 |
32 | 3545600 |
33 | -34959424 |
34 | 65032800 |
35 | -26681375 |
36 | -157565696 |
37 | 434928320 |
38 | -431889500 |
39 | -496855909 |
40 | 2527541760 |
[0,0,0,1,0,0,4,-5,0,16,-40,25,64,-240,300,131, -1280,2400,-976,-5775,16000,-15904,-18220,92875, -143616,6640,462600,-1038839,744640,1817200, -6468356,8172755,3545600,-34959424,65032800, -26681375,-157565696,434928320,-431889500, -496855909,2527541760] |