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 | 2 |
| 3 | 11 |
| 4 | 683 |
| 5 | 8947849 |
| 6 | 6405119470038039 |
| 7 | 16879085660760836481318184892448820 |
| 8 | 717956902513121251386228825698709746114025202539934052824017757985572480 |