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 | 13123110 |
| 2 | 2203385574390 |
| 3 | 2570042985510 |
| 4 | 8943387723270 |
| 5 | 826290896699730 |
| 6 | 9381843970167926138271390 |