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 | 1 |
| 4 | 2 |
| 5 | 6 |
| 6 | 17 |
| 7 | 30 |
| 8 | 60 |
| 9 | 100 |
| 10 | 277 |
| 11 | 555 |
| 12 | 990 |
| 13 | 1616 |
| 14 | 2168 |
| 15 | 2467 |
| 16 | 2648 |
| 17 | 2294 |
| 18 | 1892 |
| 19 | 1283 |
| 20 | 810 |
| 21 | 446 |
| 22 | 259 |
| 23 | 114 |
| 24 | 25 |
| 25 | 12 |
| 26 | 8 |
| 27 | 29 |
| 28 | 89 |
| 29 | 23 |