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 | 7 |
| 3 | 31 |
| 4 | 6367 |
| 5 | 925189 |
| 6 | 107197144969 |
| 7 | 93402566446301441282188479643762853393 |
| 8 | 3661745072013869917446592871282724637510478109647679973 |