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 | 8 |
| 2 | 56 |
| 3 | 288 |
| 4 | 224 |
| 5 | 3360 |
| 6 | 13056 |
| 7 | 5376 |
| 8 | 8960 |
| 9 | 206080 |
| 10 | 652800 |
| 11 | 182784 |
| 12 | 161280 |
| 13 | 412160 |
| 14 | 12776960 |
| 15 | 34467840 |
| 16 | 7311360 |
| 17 | 4386816 |
| 18 | 5935104 |
| 19 | 20443136 |
| 20 | 797282304 |
| 21 | 1884241920 |
| 22 | 321699840 |
| 23 | 146227200 |
| 24 | 134529024 |
| 25 | 245317632 |
| 26 | 1063043072 |
| 27 | 49963024384 |
| 28 | 105517547520 |
| 29 | 15073935360 |
| 30 | 5514854400 |
| 31 | 3843686400 |