The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 9 |
| 12 | 107 |
| 13 | 928 |
| 14 | 7426 |
| 15 | 54199 |
| 16 | 375332 |
[0,0,0,0,0,0,0,0,0,1,9,107,928,7426,54199,375332] |