The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 7 | 2 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 4 |
| 13 | 9 |
| 14 | 0 |
| 15 | 9 |
| 16 | 71 |
| 17 | 0 |
| 18 | 0 |
| 19 | 201 |
| 20 | 0 |
| 21 | 175 |
| 22 | 0 |
| 23 | 0 |
| 24 | 2939 |
| 25 | 19543 |
| 26 | 0 |
| 27 | 10841 |
| 28 | 609483 |
[2,0,0,0,0,4,9,0,9,71,0,0,201,0,175,0,0,2939, 19543,0,10841,609483] |