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 | 8 |
| 4 | 47 |
| 5 | 473 |
| 6 | 7190 |
| 7 | 144904 |
| 8 | 3534490 |
| 9 | 100895667 |
| 10 | 3276228298 |
| 11 | 119465644032 |
| 12 | 4827606232542 |
| 13 | 214282994249825 |
| 14 | 10361526316840074 |