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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 | 5 |
| 3 | 16 |
| 4 | 48 |
| 5 | 164 |
| 6 | 599 |
| 7 | 1952 |
[1,2,5,16,48,164,599,1952] |