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 | 4 |
| 3 | 256 |
| 4 | 387420489 |
| 5 | 5842587018385982521381124421 |
| 6 | 1219211305094648479473193481872927834667576992593770717189298225284399541977208231315051 |