The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 4 |
| 8 | 2 |
| 9 | 6 |
| 10 | 14 |
| 11 | 22 |
| 12 | 11 |
| 13 | 4 |
| 14 | 20 |
| 15 | 72 |
| 16 | 122 |
| 17 | 104 |
| 18 | 44 |
| 19 | 10 |
[1,1,1,2,4,4,2,6,14,22,11,4,20,72,122,104,44,10] |