The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 3 |
| 8 | 8 |
| 9 | 19 |
| 10 | 40 |
| 11 | 83 |
| 12 | 176 |
| 13 | 365 |
| 14 | 775 |
| 15 | 1643 |
| 16 | 3483 |
[0,0,0,0,0,0,1,3,8,19,40,83,176,365,775,1643,3483] |