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 | 2 |
| 2 | 3 |
| 3 | 11 |
| 4 | 101 |
| 5 | 307 |
| 6 | 30001253 |
| 7 | 100111001 |
| 8 | 110111011 |
| 9 | 111010111 |
| 10 | 111091111 |
| 11 | 1011099011101 |
| 12 | 1100011100011 |
| 13 | 1100101010011 |
| 14 | 1101010101011 |
| 15 | 100110101011001 |
| 16 | 100110990111001 |
| 17 | 101000010000101 |
| 18 | 101011000110101 |
| 19 | 101110000011101 |