The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 28681 |
| 4 | 38578100932 |
| 5 | 552523141020099900 |
| 6 | 58256290618618126540488181 |
| 7 | 34391373190693800172956484206435649 |
| 8 | 92324899878614980043437168195067658467141080 |
[0,1,28681,38578100932,552523141020099900, 58256290618618126540488181, 34391373190693800172956484206435649, 92324899878614980043437168195067658467141080] |