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 | 6 |
| 3 | 74 |
| 4 | 1880 |
| 5 | 80316 |
| 6 | 5141864 |
| 7 | 458608016 |
| 8 | 54247835568 |
| 9 | 8210406468580 |
| 10 | 1546786612196152 |
| 11 | 354873066291138768 |