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 | 4 |
| 2 | 40 |
| 3 | 25 |
| 4 | 145 |
| 5 | 625 |
| 6 | 169 |
| 7 | 31249 |
| 8 | 985 |
| 9 | 2600 |
| 10 | 2500 |
| 11 | 87890625 |
| 12 | 3649 |
| 13 | 384199200 |
| 14 | 15625 |
| 15 | 33124 |
| 16 | 6409 |