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) |
|---|---|
| 3 | 0 |
| 4 | 184 |
| 5 | 41450 |
| 6 | 2698344 |
| 7 | 101727276 |
| 8 | 2846840080 |
| 9 | 66502921806 |
| 10 | 1382518990400 |