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 | 0 |
| 2 | 1 |
| 3 | 42 |
| 4 | 112418 |
| 5 | 1105696796 |
| 6 | 24178822553773 |
| 7 | 1029696155560021174 |
| 8 | 77938101941693076258854 |