The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 12 |
| 5 | 12 |
| 6 | 926 |
| 7 | 3066 |
| 8 | 417378 |
| 9 | 4260776 |
| 10 | 624439948 |
| 11 | 10607876660 |
| 12 | 2165316809841 |
| 13 | 59576593947316 |
| 14 | 18657442342135966 |
[1,12,12,926,3066,417378,4260776,624439948, 10607876660,2165316809841,59576593947316, 18657442342135966] |