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 | 0 |
| 2 | 10 |
| 3 | 100 |
| 4 | 120 |
| 5 | 1010 |
| 6 | 1020 |
| 7 | 1120 |
| 8 | 1230 |
| 9 | 10120 |
| 10 | 10130 |
| 11 | 10230 |
| 12 | 10240 |
| 13 | 11230 |
| 14 | 11240 |
| 15 | 12240 |
| 16 | 12350 |
| 17 | 101130 |
| 18 | 101240 |
| 19 | 101350 |
| 20 | 102240 |
| 21 | 102350 |
| 22 | 102460 |
| 23 | 112240 |
| 24 | 112350 |
| 25 | 112460 |
| 26 | 122360 |
| 27 | 122470 |
| 28 | 123470 |
| 29 | 123580 |
| 30 | 1011240 |
| 31 | 1011250 |
| 32 | 1011350 |
| 33 | 1011360 |
| 34 | 1012250 |
| 35 | 1012360 |
| 36 | 1012460 |