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 | 1 |
| 3 | 100 |
| 4 | 121 |
| 5 | 10000 |
| 6 | 10201 |
| 7 | 12100 |
| 8 | 12321 |
| 9 | 22201 |
| 10 | 123201 |
| 11 | 130321 |
| 12 | 1000000 |
| 13 | 1002001 |
| 14 | 1020100 |
| 15 | 1022121 |
| 16 | 1210000 |
| 17 | 1212201 |
| 18 | 1232100 |
| 19 | 1320201 |
| 20 | 2220100 |
| 21 | 3101121 |
| 22 | 12320100 |
| 23 | 13032100 |
| 24 | 100000000 |
| 25 | 100020001 |
| 26 | 100200100 |
| 27 | 100220121 |
| 28 | 102010000 |
| 29 | 102030201 |
| 30 | 102212100 |
| 31 | 102232321 |
| 32 | 103002201 |
| 33 | 121000000 |
| 34 | 121022001 |
| 35 | 121220100 |