n | a(n) |
---|---|
0 | 1 |
1 | -8 |
2 | 56 |
3 | -400 |
4 | 2840 |
5 | -20208 |
6 | 143664 |
7 | -1021728 |
8 | 7265240 |
9 | -51665200 |
10 | 367392656 |
11 | -2612584928 |
12 | 18578329456 |
13 | -132112749920 |
14 | 939467783520 |
15 | -6680662171200 |
16 | 47506922377560 |
17 | -337827035002800 |
18 | 2402325467002320 |
19 | -17083203745473120 |
20 | 121480558396908240 |
21 | -863861754435010080 |
[1,-8,56,-400,2840,-20208,143664,-1021728,7265240, -51665200,367392656,-2612584928,18578329456, -132112749920,939467783520,-6680662171200, 47506922377560,-337827035002800,2402325467002320, -17083203745473120,121480558396908240, -863861754435010080] |