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 | 53 |
| 3 | 1354 |
| 4 | 43573 |
| 5 | 1472916 |
| 6 | 51907977 |
| 7 | 1877071666 |