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 | 3 |
| 3 | 5 |
| 4 | 15 |
| 5 | 5 |
| 6 | 59 |
| 7 | 159 |
| 8 | 189 |
| 9 | 569 |
| 10 | 105 |
| 11 | 1557 |
| 12 | 2549 |
| 13 | 2439 |
| 14 | 13797 |
| 15 | 25353 |
| 16 | 5627 |
| 17 | 24317 |
| 18 | 231425 |
| 19 | 164073 |