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 | 1 |
| 2 | 100 |
| 3 | 1001 |
| 4 | 10000 |
| 5 | 11001 |
| 6 | 100100 |
| 7 | 110001 |
| 8 | 1000000 |
| 9 | 1010001 |
| 10 | 1100100 |
| 11 | 1111001 |
| 12 | 10010000 |
| 13 | 10101001 |
| 14 | 11000100 |
| 15 | 11100001 |
| 16 | 100000000 |
| 17 | 100100001 |
| 18 | 101000100 |
| 19 | 101101001 |
| 20 | 110010000 |
| 21 | 110111001 |
| 22 | 111100100 |
| 23 | 1000010001 |
| 24 | 1001000000 |
| 25 | 1001110001 |
| 26 | 1010100100 |
| 27 | 1011011001 |