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 | 2 |
| 4 | 5 |
| 5 | 13 |
| 6 | 36 |
| 7 | 102 |
| 8 | 296 |
| 9 | 871 |
| 10 | 2599 |
| 11 | 7830 |
| 12 | 23799 |
| 13 | 72855 |
| 14 | 224455 |
| 15 | 695303 |
| 16 | 2164491 |