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 | 2 |
| 2 | 2 |
| 3 | 8 |
| 4 | 20 |
| 5 | 12 |
| 6 | 48 |
| 7 | 224 |
| 8 | 344 |
| 9 | 168 |
| 10 | 384 |
| 11 | 2880 |
| 12 | 8096 |
| 13 | 9872 |
| 14 | 4272 |
| 15 | 3840 |
| 16 | 42240 |
| 17 | 186816 |
| 18 | 407936 |
| 19 | 430688 |
| 20 | 171168 |
| 21 | 46080 |
| 22 | 698880 |
| 23 | 4451328 |
| 24 | 15030528 |
| 25 | 27944576 |
| 26 | 26627648 |
| 27 | 9915072 |
| 28 | 645120 |
| 29 | 12902400 |
| 30 | 111605760 |
| 31 | 535271424 |
| 32 | 1519126272 |