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) |
|---|---|
| 2 | 870 |
| 3 | 378 |
| 4 | 107827277891825604 |
| 5 | 178101 |
| 6 | 594839010 |
| 7 | 275223438741 |
| 8 | 26584448904822018 |
| 9 | 40373802 |
| 10 | 420707243066850 |
| 11 | 952809806744100 |