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 | 8 |
| 2 | 128 |
| 3 | 3456 |
| 4 | 279936 |
| 5 | 34992000 |
| 6 | 8957952000 |
| 7 | 3072577536000 |
| 8 | 1920360960000000 |
| 9 | 2556000437760000000 |
| 10 | 5615532961758720000000 |
| 11 | 13482894641182686720000000 |
| 12 | 66241461372130539855360000000 |
| 13 | 434610228062548471991016960000000 |
| 14 | 2980991554281019969386385328640000000 |