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 | 36 |
| 3 | 560 |
| 4 | 4900 |
| 5 | 56448 |
| 6 | 4750 |
| 7 | 58372180608 |
| 8 | 1130220 |
| 9 | 6252757280000 |