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) |
|---|---|
| 1 | 0 |
| 2 | 24 |
| 3 | 1344 |
| 4 | 10440 |
| 5 | 43424 |
| 6 | 130592 |
| 7 | 320880 |
| 8 | 686384 |
| 9 | 1326848 |
| 10 | 2374152 |
| 11 | 3996832 |