n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 0 |
3 | 3 |
4 | 7 |
5 | 16 |
6 | 49 |
7 | 104 |
8 | 322 |
9 | 683 |
10 | 2114 |
11 | 4485 |
12 | 13881 |
13 | 29450 |
14 | 91147 |
15 | 193378 |
16 | 598500 |
17 | 1269781 |
18 | 3929940 |
19 | 8337783 |
20 | 25805227 |
21 | 54748516 |
22 | 169445269 |
23 | 359496044 |
24 | 1112631142 |
[0,1,0,3,7,16,49,104,322,683,2114,4485,13881, 29450,91147,193378,598500,1269781,3929940,8337783, 25805227,54748516,169445269,359496044,1112631142] |