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 | 68 |
| 3 | 34236 |
| 4 | 62758896 |
| 5 | 304863598320 |
| 6 | 3242854167461280 |
| 7 | 66429116436728636640 |
| 8 | 2389384600126093124110080 |