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 | 10 |
| 3 | 100 |
| 4 | 1000 |
| 5 | 10000 |
| 6 | 100000 |
| 7 | 1000000 |
| 8 | 1111222 |
| 9 | 1112122 |
| 10 | 1112212 |
| 11 | 1112221 |
| 12 | 1121122 |
| 13 | 1121212 |
| 14 | 1121221 |
| 15 | 1122112 |
| 16 | 1122121 |
| 17 | 1122211 |
| 18 | 1211122 |
| 19 | 1211212 |
| 20 | 1211221 |
| 21 | 1212112 |
| 22 | 1212121 |
| 23 | 1212211 |
| 24 | 1221112 |
| 25 | 1221121 |
| 26 | 1221211 |
| 27 | 1222111 |
| 28 | 2111122 |
| 29 | 2111212 |
| 30 | 2111221 |
| 31 | 2112112 |