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 | 289 |
| 4 | 729 |
| 5 | 1521 |
| 6 | 2809 |
| 7 | 4761 |
| 8 | 7569 |
| 9 | 11449 |
| 10 | 16641 |
| 11 | 23409 |
| 12 | 32041 |
| 13 | 42849 |
| 14 | 56169 |
| 15 | 72361 |
| 16 | 91809 |
| 17 | 114921 |
| 18 | 142129 |
| 19 | 173889 |
| 20 | 210681 |
| 21 | 253009 |
| 22 | 301401 |
| 23 | 356409 |
| 24 | 418609 |
| 25 | 488601 |
| 26 | 567009 |
| 27 | 654481 |
| 28 | 751689 |
| 29 | 859329 |
| 30 | 978121 |
| 31 | 1108809 |
| 32 | 1252161 |
| 33 | 1408969 |