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 | 36 |
| 3 | 864 |
| 4 | 373248 |
| 5 | 3869835264 |
| 6 | 17332899271409664 |
| 7 | 804905577934332296851095552 |
| 8 | 167416167663978753511691999938432197602574336 |