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 | 25 |
| 2 | 625 |
| 3 | 3969 |
| 4 | 38809 |
| 5 | 328329 |
| 6 | 2934369 |
| 7 | 25674489 |
| 8 | 226171521 |
| 9 | 1987822225 |
| 10 | 17489798001 |
| 11 | 153843588441 |
| 12 | 1353352975569 |
| 13 | 11904328570225 |
| 14 | 104711812628641 |
| 15 | 921054699347689 |
| 16 | 8101789118783721 |
| 17 | 71265503266440025 |
| 18 | 626870990394918801 |