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 | 11 |
| 3 | 888 |
| 4 | 2830479 |
| 5 | 120023142 |
| 6 | 6351783105 |
| 7 | 267745815817 |
| 8 | 13280759167047 |