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 | 13440 |
| 2 | 19440 |
| 3 | 329400 |
| 4 | 600600 |
| 5 | 2499840 |
| 6 | 3150840 |
| 7 | 5590200 |
| 8 | 7660800 |
| 9 | 69069000 |
| 10 | 83980800 |
| 11 | 96049800 |
| 12 | 98385840 |
| 13 | 175472640 |
| 14 | 179663400 |
| 15 | 237484800 |
| 16 | 320498640 |
| 17 | 330663600 |
| 18 | 375396840 |
| 19 | 404351640 |
| 20 | 406380240 |
| 21 | 429660000 |
| 22 | 437940000 |
| 23 | 505234800 |
| 24 | 574585200 |
| 25 | 635980800 |