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 | 10 |
| 3 | 55 |
| 4 | 223 |
| 5 | 759 |
| 6 | 2309 |
| 7 | 6429 |
| 8 | 16674 |
| 9 | 40719 |
| 10 | 94344 |
| 11 | 208619 |
| 12 | 442442 |