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 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 6 |
| 6 | 9 |
| 7 | 10 |
| 8 | 25 |
| 9 | 98 |
| 10 | 122 |
| 11 | 153 |
| 12 | 190 |
| 13 | 258 |
| 14 | 511 |
| 15 | 549 |
| 16 | 1703 |
| 17 | 1790 |
| 18 | 1870 |
| 19 | 2418 |
| 20 | 5226 |
| 21 | 5258 |
| 22 | 5626 |
| 23 | 8550 |
| 24 | 13174 |
| 25 | 16718 |
| 26 | 23669 |
| 27 | 25215 |
| 28 | 33447 |
| 29 | 182566 |
| 30 | 188286 |