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 | 301 |
| 2 | 16513 |
| 3 | 60110701 |
| 4 | 1977225901 |
| 5 | 2733834545701 |
| 6 | 232630479398401 |
| 7 | 336823287227717101 |