n | a(n) |
---|---|
1 | 0 |
2 | 20 |
3 | 0 |
4 | 790 |
5 | 0 |
6 | 34042 |
7 | 0 |
8 | 1470618 |
9 | 0 |
10 | 63526554 |
11 | 0 |
12 | 2744129114 |
13 | 0 |
14 | 118536728562 |
15 | 0 |
16 | 5120367434418 |
17 | 0 |
18 | 221181729631882 |
19 | 0 |
20 | 9554266491058090 |
21 | 0 |
22 | 412710429318366178 |
23 | 0 |
24 | 17827626812331482594 |
25 | 0 |
26 | 770090248640353835354 |
27 | 0 |
[0,20,0,790,0,34042,0,1470618,0,63526554,0, 2744129114,0,118536728562,0,5120367434418,0, 221181729631882,0,9554266491058090,0, 412710429318366178,0,17827626812331482594,0, 770090248640353835354,0] |