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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 9 |
| 6 | 31 |
| 7 | 53 |
| 8 | 75 |
| 9 | 97 |
| 10 | 1109 |
| 11 | 1210 |
| 12 | 1311 |
| 13 | 1412 |
| 14 | 1513 |
| 15 | 1614 |
| 16 | 1715 |
| 17 | 1816 |
| 18 | 1917 |
| 19 | 10098 |
| 20 | 11110 |
| 21 | 11211 |
| 22 | 11312 |
| 23 | 11413 |
| 24 | 11514 |
| 25 | 11615 |
| 26 | 11716 |
| 27 | 11817 |
| 28 | 11918 |
| 29 | 20099 |
| 30 | 21111 |
| 31 | 21212 |
| 32 | 21313 |
| 33 | 21414 |
| 34 | 21515 |
| 35 | 21616 |
| 36 | 21717 |
| 37 | 21818 |
| 38 | 21919 |
| 39 | 30100 |
| 40 | 31112 |