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 | 81 |
| 2 | 3375 |
| 3 | 15625 |
| 4 | 231525 |
| 5 | 713097 |
| 6 | 1058841 |
| 7 | 1500625 |
| 8 | 4348377 |
| 9 | 5764801 |
| 10 | 16891497 |
| 11 | 163555875 |
| 12 | 209548647 |
| 13 | 239010993 |
| 14 | 239160735 |
| 15 | 254205875 |
| 16 | 267651475 |
| 17 | 405189675 |
| 18 | 451699875 |
| 19 | 958403475 |
| 20 | 1050284375 |
| 21 | 1213014231 |
| 22 | 1501534375 |
| 23 | 1695809375 |
| 24 | 1809323971 |
| 25 | 1942143291 |