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 | 3 |
| 3 | 111 |
| 4 | 24753 |
| 5 | 5293823142513 |
| 6 | 8978700270153 |
| 7 | 10982563345209 |
| 8 | 28230763238181003 |