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 | 101 |
| 2 | 111 |
| 3 | 1011 |
| 4 | 10011 |
| 5 | 10111 |
| 6 | 11101 |
| 7 | 11111 |
| 8 | 100011 |
| 9 | 100101 |
| 10 | 101111 |
| 11 | 110001 |
| 12 | 110101 |
| 13 | 1000001 |
| 14 | 1000011 |
| 15 | 1001001 |
| 16 | 1001111 |
| 17 | 1010101 |
| 18 | 1011001 |
| 19 | 1100001 |
| 20 | 1100101 |
| 21 | 1100111 |
| 22 | 1110111 |
| 23 | 1111001 |
| 24 | 1111101 |
| 25 | 10000011 |
| 26 | 10000101 |
| 27 | 10001111 |