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 | 11 |
| 2 | 396 |
| 3 | 14256 |
| 4 | 513216 |
| 5 | 18475776 |
| 6 | 665127936 |
| 7 | 23944605696 |
| 8 | 862005805056 |
| 9 | 31032208982016 |
| 10 | 1117159523352576 |
| 11 | 40217742840692736 |
| 12 | 1447838742264938496 |
| 13 | 52122194721537785856 |
| 14 | 1876399009975360290816 |
| 15 | 67550364359112970469376 |
| 16 | 2431813116928066936897536 |
| 17 | 87545272209410409728311296 |