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 | 11 |
| 2 | 110 |
| 3 | 1100 |
| 4 | 11000 |
| 5 | 110000 |
| 6 | 110011 |
| 7 | 1100000 |
| 8 | 1100110 |
| 9 | 11000000 |
| 10 | 11000011 |
| 11 | 11001100 |
| 12 | 110000000 |
| 13 | 110000011 |
| 14 | 110000110 |
| 15 | 110011000 |
| 16 | 1100000000 |
| 17 | 1100000011 |
| 18 | 1100000110 |
| 19 | 1100001100 |
| 20 | 1100110000 |
| 21 | 1100110011 |
| 22 | 11000000000 |