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 | 5 |
| 3 | 16 |
| 4 | 59 |
| 5 | 156 |
| 6 | 529 |
| 7 | 1351 |
| 8 | 3988 |
| 9 | 10236 |
| 10 | 27746 |
| 11 | 66763 |
| 12 | 176783 |
| 13 | 412450 |