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 | 1111111 |
| 2 | 10111111 |
| 3 | 11011111 |
| 4 | 11101111 |
| 5 | 11110111 |
| 6 | 11111011 |
| 7 | 11111101 |
| 8 | 11111110 |
| 9 | 100111111 |
| 10 | 101011111 |
| 11 | 101101111 |
| 12 | 101110111 |
| 13 | 101111011 |
| 14 | 101111101 |
| 15 | 101111110 |
| 16 | 110011111 |
| 17 | 110101111 |
| 18 | 110110111 |
| 19 | 110111011 |
| 20 | 110111101 |
| 21 | 110111110 |
| 22 | 111001111 |
| 23 | 111010111 |
| 24 | 111011011 |
| 25 | 111011101 |