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) |
|---|---|
| 0 | 1 |
| 1 | 24 |
| 2 | 144 |
| 3 | 456 |
| 4 | 1056 |
| 5 | 2040 |
| 6 | 3504 |
| 7 | 5544 |
| 8 | 8256 |
| 9 | 11736 |
| 10 | 16080 |
| 11 | 21384 |
| 12 | 27744 |
| 13 | 35256 |
| 14 | 44016 |
| 15 | 54120 |
| 16 | 65664 |
| 17 | 78744 |
| 18 | 93456 |
| 19 | 109896 |
| 20 | 128160 |
| 21 | 148344 |
| 22 | 170544 |
| 23 | 194856 |
| 24 | 221376 |
| 25 | 250200 |
| 26 | 281424 |
| 27 | 315144 |
| 28 | 351456 |