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 | 11 |
| 2 | 22 |
| 3 | 33 |
| 4 | 44 |
| 5 | 55 |
| 6 | 66 |
| 7 | 77 |
| 8 | 88 |
| 9 | 99 |
| 10 | 110 |
| 11 | 1111 |
| 12 | 2112 |
| 13 | 3113 |
| 14 | 4114 |
| 15 | 5115 |
| 16 | 6116 |
| 17 | 7117 |
| 18 | 8118 |
| 19 | 9119 |
| 20 | 220 |
| 21 | 1221 |
| 22 | 2222 |
| 23 | 3223 |
| 24 | 4224 |
| 25 | 5225 |
| 26 | 6226 |
| 27 | 7227 |
| 28 | 8228 |
| 29 | 9229 |
| 30 | 330 |
| 31 | 1331 |
| 32 | 2332 |
| 33 | 3333 |
| 34 | 4334 |
| 35 | 5335 |
| 36 | 6336 |