n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 5 |
5 | 16 |
6 | 46 |
7 | 162 |
8 | 488 |
9 | 1282 |
10 | 3291 |
11 | 8607 |
12 | 22407 |
13 | 58892 |
14 | 156251 |
15 | 419489 |
16 | 1135860 |
17 | 3115246 |
18 | 8646507 |
19 | 24220195 |
[0,0,0,5,16,46,162,488,1282,3291,8607,22407,58892, 156251,419489,1135860,3115246,8646507,24220195] |