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 | 11 |
| 2 | 110 |
| 3 | 1100 |
| 4 | 1111 |
| 5 | 1122 |
| 6 | 1133 |
| 7 | 1144 |
| 8 | 1155 |
| 9 | 1166 |
| 10 | 1177 |
| 11 | 1188 |
| 12 | 1199 |
| 13 | 2112 |
| 14 | 2211 |
| 15 | 3113 |
| 16 | 3311 |
| 17 | 4114 |
| 18 | 4411 |
| 19 | 5115 |
| 20 | 5511 |
| 21 | 6116 |
| 22 | 6611 |
| 23 | 7117 |
| 24 | 7711 |
| 25 | 8118 |
| 26 | 8811 |
| 27 | 9119 |
| 28 | 9911 |
| 29 | 11000 |
| 30 | 11011 |
| 31 | 11022 |
| 32 | 11033 |
| 33 | 11044 |
| 34 | 11055 |
| 35 | 11066 |
| 36 | 11077 |
| 37 | 11088 |
| 38 | 11099 |
| 39 | 11110 |