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 | 7 |
| 2 | 790 |
| 3 | 749896 |
| 4 | 1270073831726 |
| 5 | 3264508855407706377676178 |
| 6 | 18710490702451568752627532846550947209438603938993 |