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 | 101 |
| 3 | 10101 |
| 4 | 1011101 |
| 5 | 101111101 |
| 6 | 10111111101 |
| 7 | 1011111111101 |
| 8 | 101111111111101 |
| 9 | 10111111111111101 |
| 10 | 1011111111111111101 |
| 11 | 101111111111111111101 |
| 12 | 10111111111111111111101 |
| 13 | 1011111111111111111111101 |
| 14 | 101111111111111111111111101 |
| 15 | 10111111111111111111111111101 |