n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | -4 |
4 | 4 |
5 | 0 |
6 | 96 |
7 | -396 |
8 | 108 |
9 | 0 |
10 | 1012320 |
11 | -192900 |
12 | -64890 |
13 | 11460 |
14 | 90 |
15 | -2038014720 |
16 | 1977810240 |
17 | -304486560 |
18 | -12131280 |
19 | 2792160 |
20 | 21840 |
21 | -33190735737600 |
22 | 4445760574080 |
23 | 2334485260800 |
24 | -394554283200 |
25 | 2330344800 |
26 | 1198048320 |
27 | 8215200 |
[0,1,-4,4,0,96,-396,108,0,1012320,-192900,-64890, 11460,90,-2038014720,1977810240,-304486560, -12131280,2792160,21840,-33190735737600, 4445760574080,2334485260800,-394554283200, 2330344800,1198048320,8215200] |