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 | 9 |
| 3 | 85 |
| 4 | 1447 |
| 5 | 43662 |
| 6 | 2069454 |
| 7 | 219977330 |
| 8 | 41132001645 |
| 9 | 12485740560874 |
| 10 | 8479969482488403 |
| 11 | 9954378022508358771 |