n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -1 |
3 | 3 |
4 | -18 |
5 | 100 |
6 | -726 |
7 | 5698 |
8 | -52028 |
9 | 522720 |
10 | -5849876 |
11 | 71473468 |
12 | -951628488 |
13 | 13674233040 |
14 | -211091632376 |
15 | 3478906531688 |
16 | -60920066577648 |
17 | 1127785660994560 |
18 | -21969631512312976 |
19 | 448167387287730608 |
[1,0,-1,3,-18,100,-726,5698,-52028,522720, -5849876,71473468,-951628488,13674233040, -211091632376,3478906531688,-60920066577648, 1127785660994560,-21969631512312976, 448167387287730608] |