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 | 2 |
| 3 | 3 |
| 4 | 8 |
| 5 | 11 |
| 6 | 17 |
| 7 | 18 |
| 8 | 27 |
| 9 | 42 |
| 10 | 72 |
| 11 | 125 |
| 12 | 219 |
| 13 | 221 |
| 14 | 401 |
| 15 | 515 |
| 16 | 556 |
| 17 | 754 |
| 18 | 841 |
| 19 | 1146 |