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) |
|---|---|
| 0 | 5 |
| 1 | 15 |
| 2 | 1511 |
| 3 | 3115 |
| 4 | 152113 |
| 5 | 13311215 |
| 6 | 15411223 |
| 7 | 1322311415 |
| 8 | 1541142322 |
| 9 | 3213243115 |
| 10 | 1531331422 |
| 11 | 2214313315 |
| 12 | 1531331422 |
| 13 | 2214313315 |
| 14 | 1531331422 |
| 15 | 2214313315 |
| 16 | 1531331422 |
| 17 | 2214313315 |
| 18 | 1531331422 |
| 19 | 2214313315 |
| 20 | 1531331422 |