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 | 2 |
| 3 | 4 |
| 4 | 11 |
| 5 | 34 |
| 6 | 154 |
| 7 | 978 |
| 8 | 9497 |
| 9 | 127954 |
| 10 | 2165291 |
| 11 | 42609994 |
| 12 | 937233306 |
| 13 | 22576188846 |