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 | 1 |
| 2 | 9 |
| 3 | 13 |
| 4 | 81 |
| 5 | 117 |
| 6 | 169 |
| 7 | 729 |
| 8 | 1053 |
| 9 | 1521 |
| 10 | 2197 |
| 11 | 6561 |
| 12 | 9477 |
| 13 | 13689 |
| 14 | 19773 |
| 15 | 28561 |
| 16 | 59049 |
| 17 | 85293 |
| 18 | 123201 |
| 19 | 177957 |
| 20 | 257049 |
| 21 | 371293 |
| 22 | 531441 |
| 23 | 767637 |
| 24 | 1108809 |
| 25 | 1601613 |
| 26 | 2313441 |
| 27 | 3341637 |
| 28 | 4782969 |
| 29 | 4826809 |
| 30 | 6908733 |
| 31 | 9979281 |
| 32 | 14414517 |
| 33 | 20820969 |