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) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 6 |
| 3 | 6 |
| 4 | 36 |
| 5 | 88 |
| 6 | 376 |
| 7 | 1096 |
| 8 | 4476 |
| 9 | 14200 |
| 10 | 57284 |
| 11 | 190206 |
| 12 | 764812 |
| 13 | 2615268 |
| 14 | 10499504 |
| 15 | 36677626 |
| 16 | 147110276 |
| 17 | 522288944 |