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 | 16 |
| 2 | 8192 |
| 3 | 15925248 |
| 4 | 86973087744 |
| 5 | 1087163596800000 |
| 6 | 27052109211893760000 |
| 7 | 1212439465398129131520000 |
| 8 | 90809637490664903729479680000 |
| 9 | 10724436568372543800644091248640000 |
| 10 | 1906566501044007786781171777536000000000 |
| 11 | 491287106495421596910231193510320537600000000 |