The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 216 |
| 4 | 20736 |
| 5 | 777600000 |
| 6 | 46656000000 |
| 7 | 768464444160000000 |
| 8 | 247875891108249600000000 |
| 9 | 4098310578334288576512000000000 |
| 10 | 413109706296096288512409600000000 |
| 11 | 7425496288284402957501110551810198732800000000000 |
[1,4,216,20736,777600000,46656000000, 768464444160000000,247875891108249600000000, 4098310578334288576512000000000, 413109706296096288512409600000000, 7425496288284402957501110551810198732800000000000] |