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 | 0 |
| 2 | 27 |
| 3 | 311 |
| 4 | 3919 |
| 5 | 47647 |
| 6 | 628061 |
| 7 | 7098709 |
| 8 | 79587350 |
| 9 | 888504625 |
| 10 | 10169426048 |
| 11 | 110936566287 |
| 12 | 1199775766812 |