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 | 2 |
2 | 180 |
3 | 2090880 |
4 | 6044699520000 |
5 | 7151106328088486400000 |
6 | 5159620144413185246982598164480000 |
7 | 3167269298042065159436486399933762922086400000000 |
8 | 2200712918907364598767850489247066133407004510957047455416320000000 |