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 | 3 |
| 4 | 7 |
| 5 | 23 |
| 6 | 167 |
| 7 | 7223 |
| 8 | 13053767 |
| 9 | 42600227803223 |
| 10 | 453694852221687377444001767 |
| 11 | 51459754733114686962148583993443846186613037940783223 |