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 | 8 |
| 2 | 256 |
| 3 | 4608 |
| 4 | 65536 |
| 5 | 819200 |
| 6 | 9437184 |
| 7 | 102760448 |
| 8 | 1073741824 |
| 9 | 10871635968 |
| 10 | 107374182400 |
| 11 | 1039382085632 |
| 12 | 9895604649984 |
| 13 | 92908732547072 |
| 14 | 862017116176384 |
| 15 | 7916483719987200 |
| 16 | 72057594037927936 |
| 17 | 650770146155036672 |