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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 | 9 |
| 3 | 57 |
| 4 | 1111 |
| 5 | 45162 |
| 6 | 4268977 |
| 7 | 924904506 |
| 8 | 452341382317 |
| 9 | 504191764208638 |
[1,9,57,1111,45162,4268977,924904506,452341382317, 504191764208638] |