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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 8 |
| 5 | 347 |
| 6 | 10828 |
| 7 | 435767 |
| 8 | 9852036 |
| 9 | 400191963 |
| 10 | 8790619155 |
| 11 | 362290010907 |
| 12 | 8361091858959 |
| 13 | 346742245764219 |