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 | 12 |
| 6 | 31 |
| 7 | 88 |
| 8 | 263 |
| 9 | 814 |
| 10 | 2604 |
| 11 | 8575 |
| 12 | 28936 |
| 13 | 99726 |
| 14 | 350151 |
| 15 | 1249865 |