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) |
|---|---|
| 2 | 1 |
| 3 | 2 |
| 4 | 6 |
| 5 | 12 |
| 6 | 33 |
| 7 | 83 |
| 8 | 273 |
| 9 | 937 |
| 10 | 3983 |
| 11 | 18871 |
| 12 | 103697 |
| 13 | 628245 |
| 14 | 4161652 |
| 15 | 29372754 |
| 16 | 218035754 |