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 | 0 |
| 3 | 8 |
| 4 | 33 |
| 5 | 168 |
| 6 | 962 |
| 7 | 5928 |
| 8 | 38907 |
| 9 | 268056 |
| 10 | 1918938 |
| 11 | 14169360 |
| 12 | 107333498 |
| 13 | 830660688 |
| 14 | 6546655404 |
| 15 | 52410001448 |