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 | 441 |
| 4 | 729 |
| 5 | 1089 |
| 6 | 1521 |
| 7 | 6561 |
| 8 | 8649 |
| 9 | 16641 |
| 10 | 19881 |
| 11 | 33489 |
| 12 | 53361 |
| 13 | 56169 |
| 14 | 71289 |
| 15 | 74529 |
| 16 | 84681 |
| 17 | 88209 |
| 18 | 103041 |
| 19 | 168921 |
| 20 | 173889 |
| 21 | 251001 |
| 22 | 257049 |
| 23 | 263169 |
| 24 | 269361 |
| 25 | 288369 |
| 26 | 301401 |
| 27 | 314721 |
| 28 | 335241 |
| 29 | 370881 |
| 30 | 423801 |
| 31 | 463761 |
| 32 | 514089 |
| 33 | 549081 |
| 34 | 558009 |