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) |
|---|---|
| 0 | 2 |
| 1 | 6 |
| 2 | 146 |
| 3 | 2074806 |
| 4 | 5954444157018557346 |
| 5 | 140744820294208035204656447906095566299588102457814757606 |