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) |
|---|---|
| 0 | 1 |
| 1 | 20 |
| 2 | 260 |
| 3 | 360 |
| 4 | 365 |
| 5 | 7200 |
| 6 | 18980 |
| 7 | 144000 |
| 8 | 2880000 |
| 9 | 57600000 |
| 10 | 1152000000 |
| 11 | 23040000000 |