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 | 20 |
| 2 | 104 |
| 3 | 464 |
| 4 | 1952 |
| 5 | 4030 |
| 6 | 5830 |
| 7 | 130304 |
| 8 | 522752 |
| 9 | 1848964 |
| 10 | 8382464 |
| 11 | 134193152 |