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 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | 994 |
| 4 | 6917246 |
| 5 | 430634636937890 |
| 6 | 2039908095836912108987531110990 |
| 7 | 54095925512992695768212345567905438957243461489279855615252290 |