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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 4 |
| 6 | 16 |
| 7 | 256 |
| 8 | 32768 |
| 9 | 536870912 |
| 10 | 72057594037927936 |
| 11 | 324518553658426726783156020576256 |
| 12 | 411376139330301510538742295639337626245683966408394965837152256 |