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 | 0 |
| 2 | 1 |
| 3 | 16 |
| 4 | 81 |
| 5 | 4096 |
| 6 | 6561 |
| 7 | 263169 |
| 8 | 1478656 |
| 9 | 40960000 |
| 10 | 205549569 |
| 11 | 54988374016 |
| 12 | 233605955584 |
| 13 | 6263292059649 |
| 14 | 303894740860929 |
| 15 | 338531738189824 |
| 16 | 170196776412774400 |
| 17 | 709858175909625856 |
| 18 | 18638643564726714369 |
| 19 | 124592287100855910400 |
| 20 | 2576097707358918017025 |
| 21 | 479214351668445504864256 |