n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | -3 |
5 | 0 |
6 | -18 |
7 | -12 |
8 | -87 |
9 | -120 |
10 | -432 |
11 | -840 |
12 | -2883 |
13 | -5208 |
14 | -21378 |
15 | -39876 |
16 | -144507 |
17 | -309456 |
18 | -978888 |
19 | -2349828 |
20 | -6995931 |
21 | -17727576 |
22 | -52099902 |
23 | -133195908 |
24 | -389599548 |
25 | -1010029956 |
26 | -2921670744 |
27 | -7740553548 |
[1,0,0,0,-3,0,-18,-12,-87,-120,-432,-840,-2883, -5208,-21378,-39876,-144507,-309456,-978888, -2349828,-6995931,-17727576,-52099902,-133195908, -389599548,-1010029956,-2921670744,-7740553548] |