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 | 12 |
3 | 84672 |
4 | 133937556480 |
5 | 84132174409113600000 |
6 | 31820251569524195280814080000000 |
7 | 10171374668270380199596141241071328726876160000 |
8 | 3665849746122305381874580384965936229566478146157181833052160000 |