The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 31 |
| 3 | 1162 |
| 4 | 233185 |
| 5 | 16467051 |
| 6 | 410003607 |
| 7 | 88764401434 |
| 8 | 6694765030353 |
| 9 | 173658860616275 |
| 10 | 39468698299166073 |
| 11 | 3071783011857585339 |
[0,31,1162,233185,16467051,410003607,88764401434, 6694765030353,173658860616275,39468698299166073, 3071783011857585339] |