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 | 4 |
| 3 | 14 |
| 4 | 86 |
| 5 | 301 |
| 6 | 886 |
| 7 | 3101 |
| 8 | 3986 |
| 9 | 13766 |
| 10 | 13951 |
| 11 | 19049 |
| 12 | 48181 |
| 13 | 57026 |
| 14 | 75266 |
| 15 | 85699 |
| 16 | 199591 |
| 17 | 263431 |
| 18 | 295969 |
| 19 | 298154 |
| 20 | 302426 |
| 21 | 426058 |
| 22 | 882899 |