The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 888 |
| 4 | 359172 |
| 5 | 327847656 |
| 6 | 559450092072 |
| 7 | 1595319525849600 |
| 8 | 7039355228926588752 |
| 9 | 45427065106451676216288 |
[1,8,888,359172,327847656,559450092072, 1595319525849600,7039355228926588752, 45427065106451676216288] |