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 | 10 |
| 4 | 26 |
| 5 | 68 |
| 6 | 175 |
| 7 | 461 |
| 8 | 1225 |
| 9 | 3349 |
| 10 | 9266 |
| 11 | 26516 |
| 12 | 76334 |
| 13 | 221763 |