n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 12 |
5 | -40 |
6 | 190 |
7 | -1071 |
8 | 7224 |
9 | -56232 |
10 | 495898 |
11 | -4880755 |
12 | 53005700 |
13 | -629398848 |
14 | 8110146070 |
15 | -112690225935 |
16 | 1679413757168 |
17 | -26719024870576 |
18 | 451969255722162 |
19 | -8099650628337987 |
20 | 153288815339260796 |
[0,0,2,-3,12,-40,190,-1071,7224,-56232,495898, -4880755,53005700,-629398848,8110146070, -112690225935,1679413757168,-26719024870576, 451969255722162,-8099650628337987, 153288815339260796] |