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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 | 2 |
| 3 | 8 |
| 4 | 42 |
| 5 | 552 |
| 6 | 10409 |
| 7 | 368588 |
| 8 | 25699381 |
| 9 | 2989477610 |
| 10 | 641763099077 |
[1,2,8,42,552,10409,368588,25699381,2989477610, 641763099077] |