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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 23 |
| 3 | 752 |
| 4 | 51788 |
| 5 | 6322577 |
| 6 | 1226582843 |
| 7 | 351300803492 |
| 8 | 140872938680588 |
[1,2,23,752,51788,6322577,1226582843,351300803492, 140872938680588] |