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 | 104 |
| 3 | 14725 |
| 4 | 2090804 |
| 5 | 296879401 |
| 6 | 42154784096 |
| 7 | 5985682462189 |
| 8 | 849924754846700 |
| 9 | 120683329505769169 |
| 10 | 17136182865064375256 |
| 11 | 2433217283509635517141 |
| 12 | 345499718075503179058724 |