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 | 2401 |
| 1 | 1 |
| 2 | 2401 |
| 3 | 343 |
| 4 | 49 |
| 5 | 823543 |
| 6 | 16807 |
| 7 | 7 |
| 8 | 16807 |
| 9 | 49 |
| 10 | 96889010407 |
| 11 | 117649 |
| 12 | 13841287201 |
| 13 | 13841287201 |
| 14 | 11398895185373143 |
| 15 | 4747561509943 |
| 16 | 16807 |
| 17 | 117649 |
| 18 | 11398895185373143 |
| 19 | 1977326743 |
| 20 | 13841287201 |
| 21 | 3909821048582988049 |