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 | 24 |
| 2 | 984 |
| 3 | 56496 |
| 4 | 3965392 |
| 5 | 307543008 |
| 6 | 25346247472 |
| 7 | 2177808505472 |
| 8 | 192906735661528 |
| 9 | 17489278188423296 |
| 10 | 1614969746814390896 |
| 11 | 151358790056680049792 |
| 12 | 14360889227707270019712 |
| 13 | 1376684210617781240317184 |