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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 6 |
| 8 | 6 |
| 9 | 6 |
| 10 | 6 |
| 11 | 60 |
| 12 | 60 |
| 13 | 720 |
| 14 | 720 |
| 15 | 10080 |
| 16 | 10080 |
| 17 | 10080 |
| 18 | 10080 |
| 19 | 181440 |
| 20 | 181440 |
| 21 | 3628800 |
| 22 | 3628800 |
| 23 | 79833600 |
| 24 | 79833600 |
| 25 | 79833600 |
| 26 | 79833600 |
| 27 | 2075673600 |
| 28 | 2075673600 |
| 29 | 58118860800 |
| 30 | 58118860800 |
| 31 | 1743565824000 |
| 32 | 1743565824000 |
| 33 | 1743565824000 |
| 34 | 1743565824000 |