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) |
|---|---|
| 3 | 1 |
| 4 | 11 |
| 5 | 106 |
| 6 | 1232 |
| 7 | 22172 |
| 8 | 803583 |
| 9 | 70820187 |
| 10 | 16122092568 |