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 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 9 |
| 7 | 13 |
| 8 | 20 |
| 9 | 29 |
| 10 | 42 |
| 11 | 65 |
| 12 | 95 |
| 13 | 136 |
| 14 | 212 |
| 15 | 308 |
| 16 | 444 |
| 17 | 687 |
| 18 | 1005 |
| 19 | 1439 |
| 20 | 2242 |
| 21 | 3257 |
| 22 | 4696 |
| 23 | 7266 |
| 24 | 10629 |
| 25 | 15219 |