n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | 3 |
4 | 0 |
5 | -57 |
6 | 405 |
7 | -1827 |
8 | -4424 |
9 | 223541 |
10 | -2901285 |
11 | 19263167 |
12 | 121524216 |
13 | -6372341445 |
14 | 112206095729 |
15 | -915357416711 |
16 | -12418256340720 |
17 | 674275623382473 |
18 | -14438518400518281 |
19 | 129951850481453275 |
[0,1,-1,3,0,-57,405,-1827,-4424,223541,-2901285, 19263167,121524216,-6372341445,112206095729, -915357416711,-12418256340720,674275623382473, -14438518400518281,129951850481453275] |