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 | 2 |
| 1 | 4 |
| 2 | 14 |
| 3 | 104 |
| 4 | 1882 |
| 5 | 94572 |
| 6 | 15028134 |
| 7 | 8378070864 |
| 8 | 17561539552946 |
| 9 | 144130531453121108 |