The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6435 |
| 2 | 9202050 |
| 3 | 4971151900 |
| 4 | 1318349483880 |
| 5 | 201299981193168 |
| 6 | 19702998159210080 |
| 7 | 1335119245893326400 |
| 8 | 66345156372852988800 |
[1,6435,9202050,4971151900,1318349483880, 201299981193168,19702998159210080, 1335119245893326400,66345156372852988800] |