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 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 8 |
| 5 | 9 |
| 6 | 12 |
| 7 | 28 |
| 8 | 78 |
| 9 | 99 |
| 10 | 184 |
| 11 | 286 |
| 12 | 291 |
| 13 | 398 |
| 14 | 411 |
| 15 | 600 |
| 16 | 718 |
| 17 | 732 |
| 18 | 889 |
| 19 | 1963 |
| 20 | 2240 |
| 21 | 2242 |
| 22 | 2533 |
| 23 | 8800 |
| 24 | 11403 |
| 25 | 18335 |
| 26 | 20277 |
| 27 | 21029 |