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 | 120 |
| 2 | 14400 |
| 3 | 1074167 |
| 4 | 60614473 |
| 5 | 2903448338 |
| 6 | 126168072638 |
| 7 | 5173325036371 |
| 8 | 204938686276996 |
| 9 | 7955563596264227 |
| 10 | 305205052747757176 |
| 11 | 11629551123798091509 |
| 12 | 441423012052721410018 |
| 13 | 16718581835762003857099 |