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) |
|---|---|
| 2 | 1 |
| 3 | 2 |
| 4 | 2 |
| 5 | 2 |
| 6 | 4 |
| 7 | 2 |
| 8 | 16 |
| 9 | 48 |
| 10 | 8 |
| 11 | 4 |
| 12 | 56 |
| 13 | 180 |
| 14 | 44 |
| 15 | 156 |
| 16 | 300 |
| 17 | 7936 |
| 18 | 10388 |
| 19 | 11516 |
| 20 | 9104 |
| 21 | 13469268 |
| 22 | 2684084 |
| 23 | 2418800 |
| 24 | 28468692 |
| 25 | 143007944 |
| 26 | 85509116 |
| 27 | 402570696 |
| 28 | 2287868888 |
| 29 | 204306960 |
| 30 | 48715166536 |
| 31 | 147160740856 |
| 32 | 317585614148 |