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 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 9 |
| 5 | 733 |
| 6 | 393832918 |
| 7 | 61085205568458236705261921 |
| 8 | 227933478957258798550715296531141857176484963515197706487620785853119292327685 |