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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 8 |
| 6 | 9 |
| 7 | 252 |
| 8 | 252 |
| 9 | 252 |
| 10 | 48384 |
| 11 | 48384 |
| 12 | 48384 |
| 13 | 48384 |
| 14 | 525525 |
| 15 | 525525 |
| 16 | 525525 |
| 17 | 595595 |
| 18 | 595595 |
| 19 | 969969 |
| 20 | 969969 |
| 21 | 969969 |
| 22 | 405909504 |
| 23 | 5273993725 |
| 24 | 5273993725 |
| 25 | 5273993725 |
| 26 | 5273993725 |
| 27 | 5273993725 |
| 28 | 5273993725 |
| 29 | 5273993725 |
| 30 | 5273993725 |
| 31 | 290826628092 |
| 32 | 290826628092 |
| 33 | 290826628092 |