This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 111 |
| 4 | 121 |
| 5 | 1111 |
| 6 | 1221 |
| 7 | 1331 |
| 8 | 11111 |
| 9 | 12221 |
| 10 | 12321 |
| 11 | 13431 |
| 12 | 14641 |
| 13 | 111111 |
| 14 | 122221 |
| 15 | 123321 |
| 16 | 134431 |
| 17 | 135531 |
| 18 | 147741 |
| 19 | 161051 |
| 20 | 1111111 |
| 21 | 1222221 |
| 22 | 1233321 |
| 23 | 1234321 |
| 24 | 1344431 |
| 25 | 1356531 |
| 26 | 1367631 |
| 27 | 1478741 |
| 28 | 1490841 |
| 29 | 1625151 |
| 30 | 1771561 |
| 31 | 11111111 |
| 32 | 12222221 |
| 33 | 12333321 |