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 | 1011 |
| 2 | 10110 |
| 3 | 101011 |
| 4 | 101100 |
| 5 | 1010110 |
| 6 | 1011000 |
| 7 | 10101011 |
| 8 | 10101100 |
| 9 | 10110000 |
| 10 | 10110011 |
| 11 | 11001011 |
| 12 | 101010110 |
| 13 | 101011000 |
| 14 | 101100000 |
| 15 | 101100011 |
| 16 | 101100110 |
| 17 | 110001011 |
| 18 | 110010110 |
| 19 | 1010101011 |
| 20 | 1010101100 |
| 21 | 1010110000 |