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 | 560 |
| 2 | 19600 |
| 3 | 43680 |
| 4 | 893200 |
| 5 | 1521520 |
| 6 | 7207200 |
| 7 | 29269240 |
| 8 | 2845642800 |
| 9 | 26595476600 |
| 10 | 249466897680 |