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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 90 |
| 4 | 2512 |
| 5 | 112440 |
| 6 | 7367330 |
| 7 | 664573798 |
| 8 | 78969593280 |
| 9 | 11955422386863 |
| 10 | 2246458143581603 |
[1,6,90,2512,112440,7367330,664573798,78969593280, 11955422386863,2246458143581603] |