n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | -4 |
5 | 55 |
6 | -349 |
7 | 3176 |
8 | -31536 |
9 | 356981 |
10 | -4486515 |
11 | 62124676 |
12 | -939083124 |
13 | 15387231899 |
14 | -271629760609 |
15 | 5139109612040 |
16 | -103734448063424 |
17 | 2225145262126601 |
18 | -50544116286741191 |
19 | 1212003840479789476 |
[0,1,1,4,-4,55,-349,3176,-31536,356981,-4486515, 62124676,-939083124,15387231899,-271629760609, 5139109612040,-103734448063424,2225145262126601, -50544116286741191,1212003840479789476] |