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 | 1 |
| 1 | 10 |
| 2 | 110 |
| 3 | 1010 |
| 4 | 10110 |
| 5 | 100010 |
| 6 | 1001110 |
| 7 | 10000010 |
| 8 | 100010110 |
| 9 | 1000001010 |
| 10 | 10000100110 |
| 11 | 100000000010 |
| 12 | 1000001011110 |
| 13 | 10000000000010 |
| 14 | 100000010000110 |
| 15 | 1000000000101010 |
| 16 | 10000000100010110 |
| 17 | 100000000000000010 |
| 18 | 1000000001001001110 |
| 19 | 10000000000000000010 |
| 20 | 100000000010000110110 |