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 | 4 |
| 4 | 10 |
| 5 | 36 |
| 6 | 146 |
| 7 | 631 |
| 8 | 2815 |
| 9 | 12987 |
| 10 | 60601 |
| 11 | 286376 |
| 12 | 1364399 |
| 13 | 6546220 |
| 14 | 31585133 |