n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 1 |
6 | 0 |
7 | 0 |
8 | 2 |
9 | 0 |
10 | 4 |
11 | 2 |
12 | 9 |
13 | 9 |
14 | 22 |
15 | 32 |
16 | 66 |
17 | 104 |
18 | 200 |
19 | 348 |
20 | 646 |
21 | 1172 |
22 | 2144 |
23 | 3964 |
24 | 7285 |
25 | 13581 |
26 | 25136 |
27 | 47070 |
28 | 87700 |
29 | 164764 |
30 | 309308 |
31 | 582152 |
32 | 1098698 |
33 | 2074484 |
[1,0,0,0,0,1,0,0,2,0,4,2,9,9,22,32,66,104,200,348, 646,1172,2144,3964,7285,13581,25136,47070,87700, 164764,309308,582152,1098698,2074484] |