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 | 12 |
| 3 | 13 |
| 4 | 144 |
| 5 | 145 |
| 6 | 156 |
| 7 | 157 |
| 8 | 1728 |
| 9 | 1729 |
| 10 | 1740 |
| 11 | 1741 |
| 12 | 1872 |
| 13 | 1873 |
| 14 | 1884 |
| 15 | 1885 |
| 16 | 20736 |
| 17 | 20737 |
| 18 | 20748 |
| 19 | 20749 |
| 20 | 20880 |
| 21 | 20881 |
| 22 | 20892 |
| 23 | 20893 |
| 24 | 22464 |
| 25 | 22465 |
| 26 | 22476 |
| 27 | 22477 |
| 28 | 22608 |
| 29 | 22609 |
| 30 | 22620 |
| 31 | 22621 |
| 32 | 248832 |
| 33 | 248833 |
| 34 | 248844 |
| 35 | 248845 |
| 36 | 248976 |