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 | 12 |
| 2 | 252 |
| 3 | 1872 |
| 4 | 8400 |
| 5 | 17100 |
| 6 | 27900 |
| 7 | 75852 |
| 8 | 178752 |
| 9 | 191100 |
| 10 | 261072 |
| 11 | 378432 |
| 12 | 705600 |
| 13 | 737100 |
| 14 | 1063692 |
| 15 | 1343100 |
| 16 | 1976400 |
| 17 | 2317392 |
| 18 | 3483900 |
| 19 | 3820752 |
| 20 | 4038012 |
| 21 | 6061692 |
| 22 | 6760512 |
| 23 | 8822352 |
| 24 | 9305100 |
| 25 | 9909900 |
| 26 | 12024012 |