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 | 23409 |
| 5 | 137641 |
| 6 | 811801 |
| 7 | 4791721 |
| 8 | 28334329 |
| 9 | 167314225 |
| 10 | 987656329 |
| 11 | 5832835129 |
| 12 | 34448473609 |
| 13 | 203428962961 |
| 14 | 1201297105369 |
| 15 | 7094141691289 |
| 16 | 41893968228025 |
| 17 | 247400088307849 |
| 18 | 1460990772422281 |
| 19 | 8627719639899361 |