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 | 11 |
| 3 | 206 |
| 4 | 16876 |
| 5 | 4326720 |
| 6 | 3805929995 |
| 7 | 11300853019444 |
| 8 | 113522093851497024 |