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 | 4 |
| 4 | 7 |
| 5 | 12 |
| 6 | 18 |
| 7 | 28 |
| 8 | 40 |
| 9 | 57 |
| 10 | 80 |
| 11 | 110 |
| 12 | 148 |
| 13 | 200 |
| 14 | 266 |
| 15 | 348 |
| 16 | 457 |
| 17 | 592 |
| 18 | 764 |
| 19 | 978 |
| 20 | 1248 |
| 21 | 1580 |
| 22 | 2000 |
| 23 | 2508 |
| 24 | 3142 |
| 25 | 3913 |