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 | 478 |
| 4 | 64333 |
| 5 | 33422146 |
| 6 | 68672148235 |
| 7 | 562889159477706 |
| 8 | 18446447134278084301 |