The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 80 |
| 2 | 2820 |
| 3 | 238800 |
| 4 | 52918992 |
| 5 | 30386593584 |
| 6 | 46042738610392 |
| 7 | 183601380666535560 |
| 8 | 1941274548685367025892 |
[80,2820,238800,52918992,30386593584, 46042738610392,183601380666535560, 1941274548685367025892] |