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 | 7 |
| 2 | 64 |
| 3 | 576 |
| 4 | 5184 |
| 5 | 46656 |
| 6 | 419904 |
| 7 | 3779136 |
| 8 | 34012224 |
| 9 | 306110016 |
| 10 | 2754990144 |
| 11 | 24794911296 |
| 12 | 223154201664 |
| 13 | 2008387814976 |
| 14 | 18075490334784 |
| 15 | 162679413013056 |
| 16 | 1464114717117504 |
| 17 | 13177032454057536 |
| 18 | 118593292086517824 |