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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | -11 |
| 5 | -779 |
| 6 | 497941 |
| 7 | 181860254581 |
| 8 | 16687694789137362648661 |
| 9 | -263439569256003706800705587722279993788907979 |