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 | 240 |
| 2 | 2400 |
| 3 | 40320 |
| 4 | 72576 |
| 5 | 94080 |
| 6 | 120960 |
| 7 | 141120 |
| 8 | 311040 |
| 9 | 403200 |
| 10 | 483840 |
| 11 | 483840 |
| 12 | 725760 |
| 13 | 673920 |
| 14 | 1010880 |
| 15 | 1209600 |
| 16 | 1497600 |
| 17 | 1411200 |
| 18 | 1612800 |
| 19 | 1747200 |
| 20 | 2246400 |
| 21 | 2177280 |
| 22 | 2371200 |
| 23 | 2449440 |
| 24 | 2419200 |
| 25 | 2620800 |
| 26 | 2903040 |
| 27 | 3144960 |
| 28 | 3110400 |