n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 0 |
6 | 0 |
7 | 0 |
8 | 0 |
9 | 1 |
10 | 0 |
11 | 0 |
12 | 9 |
13 | 34 |
14 | 104 |
15 | 283 |
16 | 953 |
17 | 3029 |
18 | 9513 |
19 | 30359 |
20 | 98969 |
21 | 323646 |
22 | 1080659 |
23 | 3668432 |
24 | 12608491 |
25 | 43745771 |
26 | 153812801 |
[0,0,0,0,0,0,0,0,1,0,0,9,34,104,283,953,3029,9513, 30359,98969,323646,1080659,3668432,12608491, 43745771,153812801] |