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 | 7 |
| 4 | 9 |
| 5 | 15 |
| 6 | 19 |
| 7 | 21 |
| 8 | 39 |
| 9 | 59 |
| 10 | 66 |
| 11 | 75 |
| 12 | 96 |
| 13 | 124 |
| 14 | 125 |
| 15 | 180 |
| 16 | 327 |
| 17 | 358 |
| 18 | 434 |
| 19 | 699 |
| 20 | 999 |
| 21 | 1685 |
| 22 | 1779 |
| 23 | 3561 |
| 24 | 4184 |
| 25 | 4835 |