n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | -4 |
4 | 28 |
5 | -160 |
6 | 1272 |
7 | -11184 |
8 | 114448 |
9 | -1309440 |
10 | 16680992 |
11 | -233587264 |
12 | 3569157568 |
13 | -59075960320 |
14 | 1053056675712 |
15 | -20111857791744 |
16 | 409715696197888 |
17 | -8868323731660800 |
18 | 203247024658514432 |
19 | -4916860703228314624 |
20 | 125206830774036241408 |
21 | -3347784042587048058880 |
[1,0,2,-4,28,-160,1272,-11184,114448,-1309440, 16680992,-233587264,3569157568,-59075960320, 1053056675712,-20111857791744,409715696197888, -8868323731660800,203247024658514432, -4916860703228314624,125206830774036241408, -3347784042587048058880] |