The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 255 |
| 4 | 32321 |
| 5 | 16288960 |
| 6 | 32640586945 |
| 7 | 260070240849459 |
| 8 | 8239275981240122104 |
| 9 | 1037894641315598870418625 |
| 10 | 519856344665932729699372254283 |
| 11 | 1035331146709687346593709910443435692 |
[1,8,255,32321,16288960,32640586945, 260070240849459,8239275981240122104, 1037894641315598870418625, 519856344665932729699372254283, 1035331146709687346593709910443435692] |