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 | 1111 |
| 2 | 10111 |
| 3 | 11011 |
| 4 | 11101 |
| 5 | 11110 |
| 6 | 11112 |
| 7 | 11113 |
| 8 | 11114 |
| 9 | 11115 |
| 10 | 11116 |
| 11 | 11117 |
| 12 | 11118 |
| 13 | 11119 |
| 14 | 11121 |
| 15 | 11131 |
| 16 | 11141 |
| 17 | 11151 |
| 18 | 11161 |
| 19 | 11171 |
| 20 | 11181 |
| 21 | 11191 |
| 22 | 11211 |
| 23 | 11311 |
| 24 | 11411 |
| 25 | 11511 |
| 26 | 11611 |
| 27 | 11711 |
| 28 | 11811 |
| 29 | 11911 |
| 30 | 12111 |
| 31 | 13111 |