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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 12 |
| 7 | 15 |
| 8 | 20 |
| 9 | 21 |
| 10 | 44 |
| 11 | 54 |
| 12 | 75 |
| 13 | 102 |
| 14 | 116 |
| 15 | 182 |
| 16 | 288 |
| 17 | 326 |
| 18 | 344 |
| 19 | 357 |
| 20 | 458 |
| 21 | 1296 |
| 22 | 2394 |
| 23 | 2913 |
| 24 | 4749 |
| 25 | 6834 |
| 26 | 10425 |
| 27 | 17448 |