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 | 815730721 |
| 2 | 152587890625 |
| 3 | 3512479453921 |
| 4 | 33232930569601 |
| 5 | 191707312997281 |
| 6 | 806460091894081 |
| 7 | 2724905250390625 |
| 8 | 7837433594376961 |
| 9 | 19925626416901921 |
| 10 | 45949729863572161 |
| 11 | 97906861202319841 |