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 | 54 |
| 2 | 816 |
| 3 | 10530 |
| 4 | 135200 |
| 5 | 1733760 |
| 6 | 22216752 |
| 7 | 284685408 |
| 8 | 3647978320 |
| 9 | 46745561100 |
| 10 | 599002268832 |
| 11 | 7675674748560 |