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 | 1 |
| 3 | 2 |
| 4 | 11 |
| 5 | 69 |
| 6 | 125 |
| 7 | 201 |
| 8 | 584 |
| 9 | 1591 |
| 10 | 2435 |
| 11 | 2543 |
| 12 | 4813 |
| 13 | 9602 |
| 14 | 12147 |
| 15 | 122446 |
| 16 | 172037 |
| 17 | 185124 |
| 18 | 203717 |
| 19 | 319849 |
| 20 | 471163 |
| 21 | 3876852 |
| 22 | 4491253 |