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 | 1 |
| 1 | 20 |
| 2 | 400 |
| 3 | 5202 |
| 4 | 69731 |
| 5 | 766337 |
| 6 | 8708079 |
| 7 | 86540204 |
| 8 | 880526165 |
| 9 | 7996545696 |
| 10 | 73802185449 |
| 11 | 616052245142 |