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 | 4 |
| 2 | 9 |
| 3 | 36 |
| 4 | 81 |
| 5 | 324 |
| 6 | 729 |
| 7 | 2916 |
| 8 | 6561 |
| 9 | 26244 |
| 10 | 59049 |
| 11 | 236196 |
| 12 | 531441 |
| 13 | 2125764 |
| 14 | 4782969 |
| 15 | 19131876 |
| 16 | 43046721 |
| 17 | 172186884 |
| 18 | 387420489 |
| 19 | 1549681956 |
| 20 | 3486784401 |
| 21 | 13947137604 |
| 22 | 31381059609 |
| 23 | 125524238436 |
| 24 | 282429536481 |
| 25 | 1129718145924 |
| 26 | 2541865828329 |
| 27 | 10167463313316 |