n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | -1 |
3 | 12 |
4 | -30 |
5 | 262 |
6 | -1215 |
7 | 11480 |
8 | -79212 |
9 | 843946 |
10 | -7748685 |
11 | 93797220 |
12 | -1071775914 |
13 | 14707276846 |
14 | -200262193131 |
15 | 3096277157360 |
16 | -48775756669080 |
17 | 843212284894418 |
18 | -15047773283930841 |
19 | 288546782603059900 |
[0,2,-1,12,-30,262,-1215,11480,-79212,843946, -7748685,93797220,-1071775914,14707276846, -200262193131,3096277157360,-48775756669080, 843212284894418,-15047773283930841, 288546782603059900] |