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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 38 |
| 5 | 175 |
| 6 | 885 |
| 7 | 5101 |
| 8 | 32080 |
| 9 | 219569 |
| 10 | 1616882 |
| 11 | 12747354 |
| 12 | 106948772 |
| 13 | 950494868 |