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 | 9 |
| 2 | 81 |
| 3 | 2601 |
| 4 | 3969 |
| 5 | 4761 |
| 6 | 6561 |
| 7 | 25281 |
| 8 | 31329 |
| 9 | 35721 |
| 10 | 56169 |
| 11 | 59049 |
| 12 | 68121 |
| 13 | 71289 |
| 14 | 91809 |
| 15 | 131769 |
| 16 | 149769 |
| 17 | 168921 |
| 18 | 194481 |
| 19 | 199809 |
| 20 | 210681 |
| 21 | 221841 |
| 22 | 263169 |
| 23 | 301401 |
| 24 | 335241 |
| 25 | 370881 |
| 26 | 423801 |
| 27 | 439569 |
| 28 | 463761 |
| 29 | 480249 |
| 30 | 576081 |
| 31 | 603729 |
| 32 | 613089 |
| 33 | 622521 |