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 | 21 |
| 6 | 117 |
| 7 | 29 |
| 8 | 729 |
| 9 | 169 |
| 10 | 189 |
| 11 | 45 |
| 12 | 1053 |
| 13 | 53 |
| 14 | 261 |
| 15 | 273 |
| 16 | 6561 |
| 17 | 69 |
| 18 | 1521 |
| 19 | 77 |
| 20 | 1701 |
| 21 | 377 |
| 22 | 405 |
| 23 | 93 |
| 24 | 9477 |
| 25 | 441 |
| 26 | 477 |
| 27 | 2197 |
| 28 | 2349 |
| 29 | 117 |
| 30 | 2457 |
| 31 | 125 |
| 32 | 59049 |
| 33 | 585 |
| 34 | 621 |
| 35 | 609 |
| 36 | 13689 |
| 37 | 149 |
| 38 | 693 |
| 39 | 689 |
| 40 | 15309 |
| 41 | 165 |
| 42 | 3393 |
| 43 | 173 |
| 44 | 3645 |
| 45 | 3549 |
| 46 | 837 |
| 47 | 189 |
| 48 | 85293 |
| 49 | 841 |
| 50 | 3969 |