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 | 2 |
| 2 | 12 |
| 3 | 142 |
| 4 | 210 |
| 5 | 22011 |
| 6 | 210120 |
| 7 | 101220 |
| 8 | 11012210 |
| 9 | 2202120 |
| 10 | 11210021221 |
| 11 | 1100200012 |
| 12 | 1000200000111 |
| 13 | 1211201222 |
| 14 | 211222020 |
| 15 | 101101001120 |