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 | 3 |
| 3 | 130456 |
| 4 | 342096 |
| 5 | 1226720 |
| 6 | 291575011 |
| 7 | 379894587 |
| 8 | 523040160 |
| 9 | 15216609776 |
| 10 | 136622606520 |