The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 12144 |
| 7 | 61824 |
| 8 | 195063 |
| 9 | 1133440 |
| 10 | 1445136 |
| 11 | 4080384 |
| 12 | 2921232 |
| 13 | 4080384 |
| 14 | 1445136 |
| 15 | 1133440 |
| 16 | 195063 |
| 17 | 61824 |
| 18 | 12144 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 1 |
[1,0,0,0,0,0,12144,61824,195063,1133440,1445136, 4080384,2921232,4080384,1445136,1133440,195063, 61824,12144,0,0,0,0,0,1] |