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 | 441 |
| 3 | 1521 |
| 4 | 12321 |
| 5 | 19881 |
| 6 | 29241 |
| 7 | 59049 |
| 8 | 74529 |
| 9 | 95481 |
| 10 | 123201 |
| 11 | 168921 |
| 12 | 199809 |
| 13 | 227529 |
| 14 | 263169 |
| 15 | 288369 |
| 16 | 328329 |
| 17 | 356409 |
| 18 | 370881 |
| 19 | 385641 |
| 20 | 471969 |
| 21 | 480249 |
| 22 | 488601 |
| 23 | 531441 |
| 24 | 558009 |
| 25 | 594441 |
| 26 | 603729 |
| 27 | 613089 |
| 28 | 622521 |
| 29 | 690561 |
| 30 | 741321 |
| 31 | 804609 |
| 32 | 826281 |