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 | 27 |
| 3 | 256 |
| 4 | 472392 |
| 5 | 262144 |
| 6 | 13759414272 |
| 7 | 4294967296 |
| 8 | 4057816381784064 |