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 | 1 |
2 | 9 |
3 | 8820 |
4 | 3756261600 |
5 | 1808353823416358400 |
6 | 2039434890206782239939575808000 |
7 | 9701283544768145414379038964290421034844160000 |
8 | 318565016660642285381616434022976430918222575100233223503872000000 |