The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 256 |
| 2 | 5228 |
| 3 | 88596 |
| 4 | 5048352 |
| 5 | 190349280 |
| 6 | 24408220320 |
| 7 | 10214794664928 |
| 8 | 3260439951760800 |
| 9 | 3545593194352716000 |
| 10 | 12774731370996169188000 |
| 11 | 35992614807976653175327200 |
| 12 | 345829680669306156240540420000 |
[256,5228,88596,5048352,190349280,24408220320, 10214794664928,3260439951760800, 3545593194352716000,12774731370996169188000, 35992614807976653175327200, 345829680669306156240540420000] |