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 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 9 |
| 5 | 27 |
| 6 | 35 |
| 7 | 66 |
| 8 | 80 |
| 9 | 146 |
| 10 | 482 |
| 11 | 642 |
| 12 | 1019 |
| 13 | 1899 |
| 14 | 2619 |
| 15 | 10452 |
| 16 | 27719 |
| 17 | 52823 |
| 18 | 105588 |
| 19 | 111987 |
| 20 | 618852 |
| 21 | 665828 |