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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 | 1221 |
| 3 | 12212121221 |
| 4 | 1221212122121221212212121221 |
| 5 | 122121212212122121221212122121221212122121221212122121221212212121221 |
[1,1221,12212121221,1221212122121221212212121221, 12212121221212212122121212212122121212212122121212\ 2121221212212121221] |