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 | 2 |
| 2 | 2 |
| 3 | 38 |
| 4 | 838 |
| 5 | 75302 |
| 6 | 27842760 |
| 7 | 37121438930 |
| 8 | 192513188823366 |