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 | 60 |
| 3 | 3600 |
| 4 | 86400 |
| 5 | 604800 |
| 6 | 2629746 |
| 7 | 31556952 |
| 8 | 3155695200 |
| 9 | 31556952000 |
| 10 | 31556952000000000 |