n | a(n) |
---|---|
0 | 0 |
1 | -1 |
2 | 1 |
3 | 3 |
4 | -9 |
5 | -69 |
6 | 483 |
7 | 5355 |
8 | -80325 |
9 | -2081205 |
10 | 64517355 |
11 | 2738408715 |
12 | -172519749045 |
13 | -17158004483445 |
14 | 2179066569397515 |
15 | 365466952872801675 |
16 | -93194072982564427125 |
17 | -36694334101466364023925 |
18 | 18750804725849312016225675 |
[0,-1,1,3,-9,-69,483,5355,-80325,-2081205, 64517355,2738408715,-172519749045,-17158004483445, 2179066569397515,365466952872801675, -93194072982564427125,-36694334101466364023925, 18750804725849312016225675] |