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 | 5 |
| 2 | 242424 |
| 3 | 271070 |
| 4 | 9292071 |
| 5 | 29133316 |
| 6 | 70421305 |
| 7 | 215817165252 |
| 8 | 649661007154 |