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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 4 |
| 7 | 12 |
| 8 | 16 |
| 9 | 132 |
| 10 | 308 |
| 11 | 1096 |
| 12 | 3704 |
| 13 | 12984 |
| 14 | 47008 |
| 15 | 179660 |
| 16 | 681608 |