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 | 3 |
| 2 | 4 |
| 3 | 6 |
| 4 | 12 |
| 5 | 60 |
| 6 | 1020 |
| 7 | 262140 |
| 8 | 334495740 |
| 9 | 17179869180 |
| 10 | 27971850688528380 |