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 | 5 |
| 1 | 3 |
| 2 | 13 |
| 3 | 193 |
| 4 | 37633 |
| 5 | 1416317953 |
| 6 | 2005956546822746113 |
| 7 | 4023861667741036022825635656102100993 |
| 8 | 16191462721115671781777559070120513664958590125499158514329308740975788033 |