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 | 4 |
| 3 | 8 |
| 4 | 64 |
| 5 | 4096 |
| 6 | 16777216 |
| 7 | 281474976710656 |
| 8 | 79228162514264337593543950336 |
| 9 | 6277101735386680763835789423207666416102355444464034512896 |