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 | 10 |
| 2 | 11111 |
| 3 | 1001001 |
| 4 | 1010111 |
| 5 | 1110101 |
| 6 | 100011011 |
| 7 | 100111001 |
| 8 | 100111111 |
| 9 | 101110111 |
| 10 | 101111011 |
| 11 | 110001011 |
| 12 | 110011111 |
| 13 | 110100011 |
| 14 | 110110001 |
| 15 | 110111101 |
| 16 | 111010111 |
| 17 | 111011101 |
| 18 | 111110011 |
| 19 | 111111001 |
| 20 | 1000000011 |