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 | 13 |
| 2 | 113 |
| 3 | 313 |
| 4 | 613 |
| 5 | 1013 |
| 6 | 1213 |
| 7 | 1613 |
| 8 | 1913 |
| 9 | 2113 |
| 10 | 2213 |
| 11 | 2713 |
| 12 | 3313 |
| 13 | 3413 |
| 14 | 3613 |
| 15 | 4013 |
| 16 | 4513 |
| 17 | 4813 |
| 18 | 5113 |
| 19 | 5413 |
| 20 | 5813 |
| 21 | 6113 |
| 22 | 7013 |
| 23 | 7213 |
| 24 | 8513 |
| 25 | 8713 |
| 26 | 9013 |
| 27 | 9413 |
| 28 | 9613 |
| 29 | 10313 |
| 30 | 10513 |
| 31 | 10613 |
| 32 | 11113 |
| 33 | 11213 |
| 34 | 11813 |
| 35 | 12113 |
| 36 | 12413 |
| 37 | 12613 |
| 38 | 12713 |
| 39 | 13313 |
| 40 | 13513 |
| 41 | 13613 |
| 42 | 13913 |