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 | 0 |
| 2 | 1110 |
| 3 | 3120 |
| 4 | 13124120 |
| 5 | 1423324120 |
| 6 | 3433525120 |
| 7 | 253453523120 |
| 8 | 552463522120 |
| 9 | 16652443722120 |
| 10 | 1736453423823120 |
| 11 | 182736254453724120 |
| 12 | 283726355463724120 |
| 13 | 284736455453823120 |
| 14 | 383736555463722120 |