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 | 196 |
| 4 | 6084 |
| 5 | 219024 |
| 6 | 8450649 |
| 7 | 338265664 |
| 8 | 13840346025 |
| 9 | 574510941225 |
| 10 | 24093764931600 |