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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 | 13 |
| 3 | 23 |
| 4 | 113 |
| 5 | 137 |
| 6 | 373 |
| 7 | 1137 |
| 8 | 1733 |
| 9 | 1373 |
| 10 | 11317 |
| 11 | 11373 |
| 12 | 13733 |
| 13 | 31373 |
| 14 | 113173 |
| 15 | 131373 |
| 16 | 137337 |
| 17 | 337397 |
| 18 | 1113173 |
| 19 | 1137337 |
| 20 | 1373373 |
| 21 | 2337397 |
| 22 | 3733797 |
| 23 | 11373137 |
| 24 | 11373379 |
| 25 | 13733797 |
| 26 | 37337397 |
| 27 | 111373379 |
| 28 | 123733739 |
[1,2,13,23,113,137,373,1137,1733,1373,11317,11373, 13733,31373,113173,131373,137337,337397,1113173, 1137337,1373373,2337397,3733797,11373137,11373379, 13733797,37337397,111373379,123733739] |