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) |
---|---|
0 | 1 |
1 | 120 |
2 | 3024000 |
3 | 858574080000 |
4 | 1226178516326400000 |
5 | 5912338932461445120000000 |
6 | 75732595735526211882516480000000 |
7 | 2195068320271703663798288449536000000000 |
8 | 128322069958974226301129597680106864640000000000 |