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) |
|---|---|
| 4 | 16 |
| 5 | 40 |
| 6 | 300 |
| 7 | 1764 |
| 8 | 17056 |
| 9 | 118908 |
| 10 | 1466840 |
| 11 | 14079340 |
| 12 | 184672896 |
| 13 | 2206738248 |
| 14 | 33901722288 |
| 15 | 458478528000 |