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 | 9 |
| 2 | 33 |
| 3 | 91 |
| 4 | 119 |
| 5 | 133 |
| 6 | 1119 |
| 7 | 1133 |
| 8 | 1191 |
| 9 | 1313 |
| 10 | 1331 |
| 11 | 1911 |
| 12 | 3113 |
| 13 | 3131 |
| 14 | 3311 |
| 15 | 9111 |
| 16 | 11133 |
| 17 | 11191 |
| 18 | 11313 |
| 19 | 11331 |
| 20 | 11911 |
| 21 | 13113 |
| 22 | 13131 |
| 23 | 13311 |
| 24 | 19111 |
| 25 | 31113 |
| 26 | 31131 |
| 27 | 31311 |
| 28 | 33111 |
| 29 | 91111 |
| 30 | 111133 |
| 31 | 111313 |
| 32 | 111331 |
| 33 | 111911 |
| 34 | 113113 |
| 35 | 113311 |
| 36 | 119111 |
| 37 | 131131 |
| 38 | 133111 |
| 39 | 191111 |
| 40 | 311113 |