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 | 128 |
| 2 | 16384 |
| 3 | 537496 |
| 4 | 33617513 |
| 5 | 2035428944 |
| 6 | 109002398784 |
| 7 | 6231989402196 |
| 8 | 353870576831949 |
| 9 | 19905175576044841 |
| 10 | 1126107155232462372 |
| 11 | 63649373276613825016 |
| 12 | 3595294680877439593742 |
| 13 | 203177355059869569596960 |