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 | 363 |
| 2 | 5230110171 |
| 3 | 261673816513678364838549056 |
| 4 | 655010254318810176195604047856155787712898209939105520303339 |