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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 51 |
| 3 | 1155 |
| 4 | 1515 |
| 5 | 1551 |
| 6 | 5115 |
| 7 | 5151 |
| 8 | 5511 |
| 9 | 111555 |
| 10 | 115155 |
| 11 | 115515 |
| 12 | 115551 |
| 13 | 151155 |
| 14 | 151515 |
| 15 | 151551 |
| 16 | 155115 |
| 17 | 155151 |
| 18 | 155511 |
| 19 | 511155 |
| 20 | 511515 |
| 21 | 511551 |
| 22 | 515115 |
| 23 | 515151 |
| 24 | 515511 |
| 25 | 551115 |
| 26 | 551151 |
| 27 | 551511 |
| 28 | 555111 |
[15,51,1155,1515,1551,5115,5151,5511,111555, 115155,115515,115551,151155,151515,151551,155115, 155151,155511,511155,511515,511551,515115,515151, 515511,551115,551151,551511,555111] |