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 | 2 |
| 3 | 5 |
| 4 | 19 |
| 5 | 212 |
| 6 | 233 |
| 7 | 299 |
| 8 | 519 |
| 9 | 1707 |
| 10 | 3587 |
| 11 | 8841 |
| 12 | 8982 |
| 13 | 12894 |