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 | 7 |
| 2 | 2067 |
| 3 | 26587217 |
| 4 | 14749946711237 |
| 5 | 353372896021348132827 |
| 6 | 365544303118982657966348922687 |
| 7 | 16327402400665015344535793527620336180117 |