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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 124 |
| 2 | 421 |
| 3 | 1324 |
| 4 | 4231 |
| 5 | 13324 |
| 6 | 42331 |
| 7 | 1333324 |
| 8 | 4233331 |
[124,421,1324,4231,13324,42331,1333324,4233331] |