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 | 3 |
| 2 | 23 |
| 3 | 223 |
| 4 | 31223 |
| 5 | 231223 |
| 6 | 31231223 |
| 7 | 9531231223 |
| 8 | 139531231223 |
| 9 | 362139531231223 |
| 10 | 37362139531231223 |
| 11 | 3237362139531231223 |
| 12 | 133237362139531231223 |
| 13 | 944133237362139531231223 |
| 14 | 13944133237362139531231223 |
| 15 | 9513944133237362139531231223 |
| 16 | 3139513944133237362139531231223 |
| 17 | 23139513944133237362139531231223 |
| 18 | 323139513944133237362139531231223 |