n | a(n) |
---|---|
0 | 1 |
1 | -1 |
2 | 2 |
3 | -2 |
4 | 8 |
5 | 8 |
6 | 112 |
7 | 656 |
8 | 5504 |
9 | 49024 |
10 | 491264 |
11 | 5401856 |
12 | 64826368 |
13 | 842734592 |
14 | 11798300672 |
15 | 176974477312 |
16 | 2831591702528 |
17 | 48137058811904 |
18 | 866467058876416 |
19 | 16462874118127616 |
20 | 329257482363600896 |
21 | 6914407129633521664 |
22 | 152116956851941670912 |
[1,-1,2,-2,8,8,112,656,5504,49024,491264,5401856, 64826368,842734592,11798300672,176974477312, 2831591702528,48137058811904,866467058876416, 16462874118127616,329257482363600896, 6914407129633521664,152116956851941670912] |