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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 15 |
| 3 | 16 |
| 4 | 225 |
| 5 | 226 |
| 6 | 240 |
| 7 | 241 |
| 8 | 3375 |
| 9 | 3376 |
| 10 | 3390 |
| 11 | 3391 |
| 12 | 3600 |
| 13 | 3601 |
| 14 | 3615 |
| 15 | 3616 |
| 16 | 50625 |
| 17 | 50626 |
| 18 | 50640 |
| 19 | 50641 |
| 20 | 50850 |
| 21 | 50851 |
| 22 | 50865 |
| 23 | 50866 |
| 24 | 54000 |
| 25 | 54001 |
| 26 | 54015 |
| 27 | 54016 |
| 28 | 54225 |
| 29 | 54226 |
| 30 | 54240 |
| 31 | 54241 |
| 32 | 759375 |
| 33 | 759376 |
| 34 | 759390 |
| 35 | 759391 |
| 36 | 759600 |