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 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 16 |
| 7 | 5 |
| 8 | 360 |
| 9 | 142 |
| 10 | 104 |
| 11 | 34 |
| 12 | 1904 |
| 13 | 3127 |
| 14 | 253 |
| 15 | 1219 |
| 16 | 8755 |
| 17 | 16222 |
| 18 | 7672 |
| 19 | 22515 |